ipr.c revision d73b388459b1ee2e80f8ff9c1916d75640d7d920
1/* 2 * ipr.c -- driver for IBM Power Linux RAID adapters 3 * 4 * Written By: Brian King <brking@us.ibm.com>, IBM Corporation 5 * 6 * Copyright (C) 2003, 2004 IBM Corporation 7 * 8 * This program is free software; you can redistribute it and/or modify 9 * it under the terms of the GNU General Public License as published by 10 * the Free Software Foundation; either version 2 of the License, or 11 * (at your option) any later version. 12 * 13 * This program is distributed in the hope that it will be useful, 14 * but WITHOUT ANY WARRANTY; without even the implied warranty of 15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 16 * GNU General Public License for more details. 17 * 18 * You should have received a copy of the GNU General Public License 19 * along with this program; if not, write to the Free Software 20 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA 21 * 22 */ 23 24/* 25 * Notes: 26 * 27 * This driver is used to control the following SCSI adapters: 28 * 29 * IBM iSeries: 5702, 5703, 2780, 5709, 570A, 570B 30 * 31 * IBM pSeries: PCI-X Dual Channel Ultra 320 SCSI RAID Adapter 32 * PCI-X Dual Channel Ultra 320 SCSI Adapter 33 * PCI-X Dual Channel Ultra 320 SCSI RAID Enablement Card 34 * Embedded SCSI adapter on p615 and p655 systems 35 * 36 * Supported Hardware Features: 37 * - Ultra 320 SCSI controller 38 * - PCI-X host interface 39 * - Embedded PowerPC RISC Processor and Hardware XOR DMA Engine 40 * - Non-Volatile Write Cache 41 * - Supports attachment of non-RAID disks, tape, and optical devices 42 * - RAID Levels 0, 5, 10 43 * - Hot spare 44 * - Background Parity Checking 45 * - Background Data Scrubbing 46 * - Ability to increase the capacity of an existing RAID 5 disk array 47 * by adding disks 48 * 49 * Driver Features: 50 * - Tagged command queuing 51 * - Adapter microcode download 52 * - PCI hot plug 53 * - SCSI device hot plug 54 * 55 */ 56 57#include <linux/fs.h> 58#include <linux/init.h> 59#include <linux/types.h> 60#include <linux/errno.h> 61#include <linux/kernel.h> 62#include <linux/slab.h> 63#include <linux/ioport.h> 64#include <linux/delay.h> 65#include <linux/pci.h> 66#include <linux/wait.h> 67#include <linux/spinlock.h> 68#include <linux/sched.h> 69#include <linux/interrupt.h> 70#include <linux/blkdev.h> 71#include <linux/firmware.h> 72#include <linux/module.h> 73#include <linux/moduleparam.h> 74#include <linux/libata.h> 75#include <linux/hdreg.h> 76#include <linux/reboot.h> 77#include <linux/stringify.h> 78#include <asm/io.h> 79#include <asm/irq.h> 80#include <asm/processor.h> 81#include <scsi/scsi.h> 82#include <scsi/scsi_host.h> 83#include <scsi/scsi_tcq.h> 84#include <scsi/scsi_eh.h> 85#include <scsi/scsi_cmnd.h> 86#include "ipr.h" 87 88/* 89 * Global Data 90 */ 91static LIST_HEAD(ipr_ioa_head); 92static unsigned int ipr_log_level = IPR_DEFAULT_LOG_LEVEL; 93static unsigned int ipr_max_speed = 1; 94static int ipr_testmode = 0; 95static unsigned int ipr_fastfail = 0; 96static unsigned int ipr_transop_timeout = 0; 97static unsigned int ipr_debug = 0; 98static unsigned int ipr_max_devs = IPR_DEFAULT_SIS64_DEVS; 99static unsigned int ipr_dual_ioa_raid = 1; 100static DEFINE_SPINLOCK(ipr_driver_lock); 101 102/* This table describes the differences between DMA controller chips */ 103static const struct ipr_chip_cfg_t ipr_chip_cfg[] = { 104 { /* Gemstone, Citrine, Obsidian, and Obsidian-E */ 105 .mailbox = 0x0042C, 106 .cache_line_size = 0x20, 107 { 108 .set_interrupt_mask_reg = 0x0022C, 109 .clr_interrupt_mask_reg = 0x00230, 110 .clr_interrupt_mask_reg32 = 0x00230, 111 .sense_interrupt_mask_reg = 0x0022C, 112 .sense_interrupt_mask_reg32 = 0x0022C, 113 .clr_interrupt_reg = 0x00228, 114 .clr_interrupt_reg32 = 0x00228, 115 .sense_interrupt_reg = 0x00224, 116 .sense_interrupt_reg32 = 0x00224, 117 .ioarrin_reg = 0x00404, 118 .sense_uproc_interrupt_reg = 0x00214, 119 .sense_uproc_interrupt_reg32 = 0x00214, 120 .set_uproc_interrupt_reg = 0x00214, 121 .set_uproc_interrupt_reg32 = 0x00214, 122 .clr_uproc_interrupt_reg = 0x00218, 123 .clr_uproc_interrupt_reg32 = 0x00218 124 } 125 }, 126 { /* Snipe and Scamp */ 127 .mailbox = 0x0052C, 128 .cache_line_size = 0x20, 129 { 130 .set_interrupt_mask_reg = 0x00288, 131 .clr_interrupt_mask_reg = 0x0028C, 132 .clr_interrupt_mask_reg32 = 0x0028C, 133 .sense_interrupt_mask_reg = 0x00288, 134 .sense_interrupt_mask_reg32 = 0x00288, 135 .clr_interrupt_reg = 0x00284, 136 .clr_interrupt_reg32 = 0x00284, 137 .sense_interrupt_reg = 0x00280, 138 .sense_interrupt_reg32 = 0x00280, 139 .ioarrin_reg = 0x00504, 140 .sense_uproc_interrupt_reg = 0x00290, 141 .sense_uproc_interrupt_reg32 = 0x00290, 142 .set_uproc_interrupt_reg = 0x00290, 143 .set_uproc_interrupt_reg32 = 0x00290, 144 .clr_uproc_interrupt_reg = 0x00294, 145 .clr_uproc_interrupt_reg32 = 0x00294 146 } 147 }, 148 { /* CRoC */ 149 .mailbox = 0x00044, 150 .cache_line_size = 0x20, 151 { 152 .set_interrupt_mask_reg = 0x00010, 153 .clr_interrupt_mask_reg = 0x00018, 154 .clr_interrupt_mask_reg32 = 0x0001C, 155 .sense_interrupt_mask_reg = 0x00010, 156 .sense_interrupt_mask_reg32 = 0x00014, 157 .clr_interrupt_reg = 0x00008, 158 .clr_interrupt_reg32 = 0x0000C, 159 .sense_interrupt_reg = 0x00000, 160 .sense_interrupt_reg32 = 0x00004, 161 .ioarrin_reg = 0x00070, 162 .sense_uproc_interrupt_reg = 0x00020, 163 .sense_uproc_interrupt_reg32 = 0x00024, 164 .set_uproc_interrupt_reg = 0x00020, 165 .set_uproc_interrupt_reg32 = 0x00024, 166 .clr_uproc_interrupt_reg = 0x00028, 167 .clr_uproc_interrupt_reg32 = 0x0002C, 168 .init_feedback_reg = 0x0005C, 169 .dump_addr_reg = 0x00064, 170 .dump_data_reg = 0x00068, 171 .endian_swap_reg = 0x00084 172 } 173 }, 174}; 175 176static const struct ipr_chip_t ipr_chip[] = { 177 { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE, IPR_USE_LSI, IPR_SIS32, IPR_PCI_CFG, &ipr_chip_cfg[0] }, 178 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE, IPR_USE_LSI, IPR_SIS32, IPR_PCI_CFG, &ipr_chip_cfg[0] }, 179 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_OBSIDIAN, IPR_USE_LSI, IPR_SIS32, IPR_PCI_CFG, &ipr_chip_cfg[0] }, 180 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN, IPR_USE_LSI, IPR_SIS32, IPR_PCI_CFG, &ipr_chip_cfg[0] }, 181 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN_E, IPR_USE_MSI, IPR_SIS32, IPR_PCI_CFG, &ipr_chip_cfg[0] }, 182 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_SNIPE, IPR_USE_LSI, IPR_SIS32, IPR_PCI_CFG, &ipr_chip_cfg[1] }, 183 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_SCAMP, IPR_USE_LSI, IPR_SIS32, IPR_PCI_CFG, &ipr_chip_cfg[1] }, 184 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROC_FPGA_E2, IPR_USE_MSI, IPR_SIS64, IPR_MMIO, &ipr_chip_cfg[2] }, 185 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROC_ASIC_E2, IPR_USE_MSI, IPR_SIS64, IPR_MMIO, &ipr_chip_cfg[2] } 186}; 187 188static int ipr_max_bus_speeds [] = { 189 IPR_80MBs_SCSI_RATE, IPR_U160_SCSI_RATE, IPR_U320_SCSI_RATE 190}; 191 192MODULE_AUTHOR("Brian King <brking@us.ibm.com>"); 193MODULE_DESCRIPTION("IBM Power RAID SCSI Adapter Driver"); 194module_param_named(max_speed, ipr_max_speed, uint, 0); 195MODULE_PARM_DESC(max_speed, "Maximum bus speed (0-2). Default: 1=U160. Speeds: 0=80 MB/s, 1=U160, 2=U320"); 196module_param_named(log_level, ipr_log_level, uint, 0); 197MODULE_PARM_DESC(log_level, "Set to 0 - 4 for increasing verbosity of device driver"); 198module_param_named(testmode, ipr_testmode, int, 0); 199MODULE_PARM_DESC(testmode, "DANGEROUS!!! Allows unsupported configurations"); 200module_param_named(fastfail, ipr_fastfail, int, S_IRUGO | S_IWUSR); 201MODULE_PARM_DESC(fastfail, "Reduce timeouts and retries"); 202module_param_named(transop_timeout, ipr_transop_timeout, int, 0); 203MODULE_PARM_DESC(transop_timeout, "Time in seconds to wait for adapter to come operational (default: 300)"); 204module_param_named(debug, ipr_debug, int, S_IRUGO | S_IWUSR); 205MODULE_PARM_DESC(debug, "Enable device driver debugging logging. Set to 1 to enable. (default: 0)"); 206module_param_named(dual_ioa_raid, ipr_dual_ioa_raid, int, 0); 207MODULE_PARM_DESC(dual_ioa_raid, "Enable dual adapter RAID support. Set to 1 to enable. (default: 1)"); 208module_param_named(max_devs, ipr_max_devs, int, 0); 209MODULE_PARM_DESC(max_devs, "Specify the maximum number of physical devices. " 210 "[Default=" __stringify(IPR_DEFAULT_SIS64_DEVS) "]"); 211MODULE_LICENSE("GPL"); 212MODULE_VERSION(IPR_DRIVER_VERSION); 213 214/* A constant array of IOASCs/URCs/Error Messages */ 215static const 216struct ipr_error_table_t ipr_error_table[] = { 217 {0x00000000, 1, IPR_DEFAULT_LOG_LEVEL, 218 "8155: An unknown error was received"}, 219 {0x00330000, 0, 0, 220 "Soft underlength error"}, 221 {0x005A0000, 0, 0, 222 "Command to be cancelled not found"}, 223 {0x00808000, 0, 0, 224 "Qualified success"}, 225 {0x01080000, 1, IPR_DEFAULT_LOG_LEVEL, 226 "FFFE: Soft device bus error recovered by the IOA"}, 227 {0x01088100, 0, IPR_DEFAULT_LOG_LEVEL, 228 "4101: Soft device bus fabric error"}, 229 {0x01100100, 0, IPR_DEFAULT_LOG_LEVEL, 230 "FFFC: Logical block guard error recovered by the device"}, 231 {0x01100300, 0, IPR_DEFAULT_LOG_LEVEL, 232 "FFFC: Logical block reference tag error recovered by the device"}, 233 {0x01108300, 0, IPR_DEFAULT_LOG_LEVEL, 234 "4171: Recovered scatter list tag / sequence number error"}, 235 {0x01109000, 0, IPR_DEFAULT_LOG_LEVEL, 236 "FF3D: Recovered logical block CRC error on IOA to Host transfer"}, 237 {0x01109200, 0, IPR_DEFAULT_LOG_LEVEL, 238 "4171: Recovered logical block sequence number error on IOA to Host transfer"}, 239 {0x0110A000, 0, IPR_DEFAULT_LOG_LEVEL, 240 "FFFD: Recovered logical block reference tag error detected by the IOA"}, 241 {0x0110A100, 0, IPR_DEFAULT_LOG_LEVEL, 242 "FFFD: Logical block guard error recovered by the IOA"}, 243 {0x01170600, 0, IPR_DEFAULT_LOG_LEVEL, 244 "FFF9: Device sector reassign successful"}, 245 {0x01170900, 0, IPR_DEFAULT_LOG_LEVEL, 246 "FFF7: Media error recovered by device rewrite procedures"}, 247 {0x01180200, 0, IPR_DEFAULT_LOG_LEVEL, 248 "7001: IOA sector reassignment successful"}, 249 {0x01180500, 0, IPR_DEFAULT_LOG_LEVEL, 250 "FFF9: Soft media error. Sector reassignment recommended"}, 251 {0x01180600, 0, IPR_DEFAULT_LOG_LEVEL, 252 "FFF7: Media error recovered by IOA rewrite procedures"}, 253 {0x01418000, 0, IPR_DEFAULT_LOG_LEVEL, 254 "FF3D: Soft PCI bus error recovered by the IOA"}, 255 {0x01440000, 1, IPR_DEFAULT_LOG_LEVEL, 256 "FFF6: Device hardware error recovered by the IOA"}, 257 {0x01448100, 0, IPR_DEFAULT_LOG_LEVEL, 258 "FFF6: Device hardware error recovered by the device"}, 259 {0x01448200, 1, IPR_DEFAULT_LOG_LEVEL, 260 "FF3D: Soft IOA error recovered by the IOA"}, 261 {0x01448300, 0, IPR_DEFAULT_LOG_LEVEL, 262 "FFFA: Undefined device response recovered by the IOA"}, 263 {0x014A0000, 1, IPR_DEFAULT_LOG_LEVEL, 264 "FFF6: Device bus error, message or command phase"}, 265 {0x014A8000, 0, IPR_DEFAULT_LOG_LEVEL, 266 "FFFE: Task Management Function failed"}, 267 {0x015D0000, 0, IPR_DEFAULT_LOG_LEVEL, 268 "FFF6: Failure prediction threshold exceeded"}, 269 {0x015D9200, 0, IPR_DEFAULT_LOG_LEVEL, 270 "8009: Impending cache battery pack failure"}, 271 {0x02040400, 0, 0, 272 "34FF: Disk device format in progress"}, 273 {0x02048000, 0, IPR_DEFAULT_LOG_LEVEL, 274 "9070: IOA requested reset"}, 275 {0x023F0000, 0, 0, 276 "Synchronization required"}, 277 {0x024E0000, 0, 0, 278 "No ready, IOA shutdown"}, 279 {0x025A0000, 0, 0, 280 "Not ready, IOA has been shutdown"}, 281 {0x02670100, 0, IPR_DEFAULT_LOG_LEVEL, 282 "3020: Storage subsystem configuration error"}, 283 {0x03110B00, 0, 0, 284 "FFF5: Medium error, data unreadable, recommend reassign"}, 285 {0x03110C00, 0, 0, 286 "7000: Medium error, data unreadable, do not reassign"}, 287 {0x03310000, 0, IPR_DEFAULT_LOG_LEVEL, 288 "FFF3: Disk media format bad"}, 289 {0x04050000, 0, IPR_DEFAULT_LOG_LEVEL, 290 "3002: Addressed device failed to respond to selection"}, 291 {0x04080000, 1, IPR_DEFAULT_LOG_LEVEL, 292 "3100: Device bus error"}, 293 {0x04080100, 0, IPR_DEFAULT_LOG_LEVEL, 294 "3109: IOA timed out a device command"}, 295 {0x04088000, 0, 0, 296 "3120: SCSI bus is not operational"}, 297 {0x04088100, 0, IPR_DEFAULT_LOG_LEVEL, 298 "4100: Hard device bus fabric error"}, 299 {0x04100100, 0, IPR_DEFAULT_LOG_LEVEL, 300 "310C: Logical block guard error detected by the device"}, 301 {0x04100300, 0, IPR_DEFAULT_LOG_LEVEL, 302 "310C: Logical block reference tag error detected by the device"}, 303 {0x04108300, 1, IPR_DEFAULT_LOG_LEVEL, 304 "4170: Scatter list tag / sequence number error"}, 305 {0x04109000, 1, IPR_DEFAULT_LOG_LEVEL, 306 "8150: Logical block CRC error on IOA to Host transfer"}, 307 {0x04109200, 1, IPR_DEFAULT_LOG_LEVEL, 308 "4170: Logical block sequence number error on IOA to Host transfer"}, 309 {0x0410A000, 0, IPR_DEFAULT_LOG_LEVEL, 310 "310D: Logical block reference tag error detected by the IOA"}, 311 {0x0410A100, 0, IPR_DEFAULT_LOG_LEVEL, 312 "310D: Logical block guard error detected by the IOA"}, 313 {0x04118000, 0, IPR_DEFAULT_LOG_LEVEL, 314 "9000: IOA reserved area data check"}, 315 {0x04118100, 0, IPR_DEFAULT_LOG_LEVEL, 316 "9001: IOA reserved area invalid data pattern"}, 317 {0x04118200, 0, IPR_DEFAULT_LOG_LEVEL, 318 "9002: IOA reserved area LRC error"}, 319 {0x04118300, 1, IPR_DEFAULT_LOG_LEVEL, 320 "Hardware Error, IOA metadata access error"}, 321 {0x04320000, 0, IPR_DEFAULT_LOG_LEVEL, 322 "102E: Out of alternate sectors for disk storage"}, 323 {0x04330000, 1, IPR_DEFAULT_LOG_LEVEL, 324 "FFF4: Data transfer underlength error"}, 325 {0x04338000, 1, IPR_DEFAULT_LOG_LEVEL, 326 "FFF4: Data transfer overlength error"}, 327 {0x043E0100, 0, IPR_DEFAULT_LOG_LEVEL, 328 "3400: Logical unit failure"}, 329 {0x04408500, 0, IPR_DEFAULT_LOG_LEVEL, 330 "FFF4: Device microcode is corrupt"}, 331 {0x04418000, 1, IPR_DEFAULT_LOG_LEVEL, 332 "8150: PCI bus error"}, 333 {0x04430000, 1, 0, 334 "Unsupported device bus message received"}, 335 {0x04440000, 1, IPR_DEFAULT_LOG_LEVEL, 336 "FFF4: Disk device problem"}, 337 {0x04448200, 1, IPR_DEFAULT_LOG_LEVEL, 338 "8150: Permanent IOA failure"}, 339 {0x04448300, 0, IPR_DEFAULT_LOG_LEVEL, 340 "3010: Disk device returned wrong response to IOA"}, 341 {0x04448400, 0, IPR_DEFAULT_LOG_LEVEL, 342 "8151: IOA microcode error"}, 343 {0x04448500, 0, 0, 344 "Device bus status error"}, 345 {0x04448600, 0, IPR_DEFAULT_LOG_LEVEL, 346 "8157: IOA error requiring IOA reset to recover"}, 347 {0x04448700, 0, 0, 348 "ATA device status error"}, 349 {0x04490000, 0, 0, 350 "Message reject received from the device"}, 351 {0x04449200, 0, IPR_DEFAULT_LOG_LEVEL, 352 "8008: A permanent cache battery pack failure occurred"}, 353 {0x0444A000, 0, IPR_DEFAULT_LOG_LEVEL, 354 "9090: Disk unit has been modified after the last known status"}, 355 {0x0444A200, 0, IPR_DEFAULT_LOG_LEVEL, 356 "9081: IOA detected device error"}, 357 {0x0444A300, 0, IPR_DEFAULT_LOG_LEVEL, 358 "9082: IOA detected device error"}, 359 {0x044A0000, 1, IPR_DEFAULT_LOG_LEVEL, 360 "3110: Device bus error, message or command phase"}, 361 {0x044A8000, 1, IPR_DEFAULT_LOG_LEVEL, 362 "3110: SAS Command / Task Management Function failed"}, 363 {0x04670400, 0, IPR_DEFAULT_LOG_LEVEL, 364 "9091: Incorrect hardware configuration change has been detected"}, 365 {0x04678000, 0, IPR_DEFAULT_LOG_LEVEL, 366 "9073: Invalid multi-adapter configuration"}, 367 {0x04678100, 0, IPR_DEFAULT_LOG_LEVEL, 368 "4010: Incorrect connection between cascaded expanders"}, 369 {0x04678200, 0, IPR_DEFAULT_LOG_LEVEL, 370 "4020: Connections exceed IOA design limits"}, 371 {0x04678300, 0, IPR_DEFAULT_LOG_LEVEL, 372 "4030: Incorrect multipath connection"}, 373 {0x04679000, 0, IPR_DEFAULT_LOG_LEVEL, 374 "4110: Unsupported enclosure function"}, 375 {0x046E0000, 0, IPR_DEFAULT_LOG_LEVEL, 376 "FFF4: Command to logical unit failed"}, 377 {0x05240000, 1, 0, 378 "Illegal request, invalid request type or request packet"}, 379 {0x05250000, 0, 0, 380 "Illegal request, invalid resource handle"}, 381 {0x05258000, 0, 0, 382 "Illegal request, commands not allowed to this device"}, 383 {0x05258100, 0, 0, 384 "Illegal request, command not allowed to a secondary adapter"}, 385 {0x05258200, 0, 0, 386 "Illegal request, command not allowed to a non-optimized resource"}, 387 {0x05260000, 0, 0, 388 "Illegal request, invalid field in parameter list"}, 389 {0x05260100, 0, 0, 390 "Illegal request, parameter not supported"}, 391 {0x05260200, 0, 0, 392 "Illegal request, parameter value invalid"}, 393 {0x052C0000, 0, 0, 394 "Illegal request, command sequence error"}, 395 {0x052C8000, 1, 0, 396 "Illegal request, dual adapter support not enabled"}, 397 {0x06040500, 0, IPR_DEFAULT_LOG_LEVEL, 398 "9031: Array protection temporarily suspended, protection resuming"}, 399 {0x06040600, 0, IPR_DEFAULT_LOG_LEVEL, 400 "9040: Array protection temporarily suspended, protection resuming"}, 401 {0x06288000, 0, IPR_DEFAULT_LOG_LEVEL, 402 "3140: Device bus not ready to ready transition"}, 403 {0x06290000, 0, IPR_DEFAULT_LOG_LEVEL, 404 "FFFB: SCSI bus was reset"}, 405 {0x06290500, 0, 0, 406 "FFFE: SCSI bus transition to single ended"}, 407 {0x06290600, 0, 0, 408 "FFFE: SCSI bus transition to LVD"}, 409 {0x06298000, 0, IPR_DEFAULT_LOG_LEVEL, 410 "FFFB: SCSI bus was reset by another initiator"}, 411 {0x063F0300, 0, IPR_DEFAULT_LOG_LEVEL, 412 "3029: A device replacement has occurred"}, 413 {0x064C8000, 0, IPR_DEFAULT_LOG_LEVEL, 414 "9051: IOA cache data exists for a missing or failed device"}, 415 {0x064C8100, 0, IPR_DEFAULT_LOG_LEVEL, 416 "9055: Auxiliary cache IOA contains cache data needed by the primary IOA"}, 417 {0x06670100, 0, IPR_DEFAULT_LOG_LEVEL, 418 "9025: Disk unit is not supported at its physical location"}, 419 {0x06670600, 0, IPR_DEFAULT_LOG_LEVEL, 420 "3020: IOA detected a SCSI bus configuration error"}, 421 {0x06678000, 0, IPR_DEFAULT_LOG_LEVEL, 422 "3150: SCSI bus configuration error"}, 423 {0x06678100, 0, IPR_DEFAULT_LOG_LEVEL, 424 "9074: Asymmetric advanced function disk configuration"}, 425 {0x06678300, 0, IPR_DEFAULT_LOG_LEVEL, 426 "4040: Incomplete multipath connection between IOA and enclosure"}, 427 {0x06678400, 0, IPR_DEFAULT_LOG_LEVEL, 428 "4041: Incomplete multipath connection between enclosure and device"}, 429 {0x06678500, 0, IPR_DEFAULT_LOG_LEVEL, 430 "9075: Incomplete multipath connection between IOA and remote IOA"}, 431 {0x06678600, 0, IPR_DEFAULT_LOG_LEVEL, 432 "9076: Configuration error, missing remote IOA"}, 433 {0x06679100, 0, IPR_DEFAULT_LOG_LEVEL, 434 "4050: Enclosure does not support a required multipath function"}, 435 {0x06690000, 0, IPR_DEFAULT_LOG_LEVEL, 436 "4070: Logically bad block written on device"}, 437 {0x06690200, 0, IPR_DEFAULT_LOG_LEVEL, 438 "9041: Array protection temporarily suspended"}, 439 {0x06698200, 0, IPR_DEFAULT_LOG_LEVEL, 440 "9042: Corrupt array parity detected on specified device"}, 441 {0x066B0200, 0, IPR_DEFAULT_LOG_LEVEL, 442 "9030: Array no longer protected due to missing or failed disk unit"}, 443 {0x066B8000, 0, IPR_DEFAULT_LOG_LEVEL, 444 "9071: Link operational transition"}, 445 {0x066B8100, 0, IPR_DEFAULT_LOG_LEVEL, 446 "9072: Link not operational transition"}, 447 {0x066B8200, 0, IPR_DEFAULT_LOG_LEVEL, 448 "9032: Array exposed but still protected"}, 449 {0x066B8300, 0, IPR_DEFAULT_LOG_LEVEL + 1, 450 "70DD: Device forced failed by disrupt device command"}, 451 {0x066B9100, 0, IPR_DEFAULT_LOG_LEVEL, 452 "4061: Multipath redundancy level got better"}, 453 {0x066B9200, 0, IPR_DEFAULT_LOG_LEVEL, 454 "4060: Multipath redundancy level got worse"}, 455 {0x07270000, 0, 0, 456 "Failure due to other device"}, 457 {0x07278000, 0, IPR_DEFAULT_LOG_LEVEL, 458 "9008: IOA does not support functions expected by devices"}, 459 {0x07278100, 0, IPR_DEFAULT_LOG_LEVEL, 460 "9010: Cache data associated with attached devices cannot be found"}, 461 {0x07278200, 0, IPR_DEFAULT_LOG_LEVEL, 462 "9011: Cache data belongs to devices other than those attached"}, 463 {0x07278400, 0, IPR_DEFAULT_LOG_LEVEL, 464 "9020: Array missing 2 or more devices with only 1 device present"}, 465 {0x07278500, 0, IPR_DEFAULT_LOG_LEVEL, 466 "9021: Array missing 2 or more devices with 2 or more devices present"}, 467 {0x07278600, 0, IPR_DEFAULT_LOG_LEVEL, 468 "9022: Exposed array is missing a required device"}, 469 {0x07278700, 0, IPR_DEFAULT_LOG_LEVEL, 470 "9023: Array member(s) not at required physical locations"}, 471 {0x07278800, 0, IPR_DEFAULT_LOG_LEVEL, 472 "9024: Array not functional due to present hardware configuration"}, 473 {0x07278900, 0, IPR_DEFAULT_LOG_LEVEL, 474 "9026: Array not functional due to present hardware configuration"}, 475 {0x07278A00, 0, IPR_DEFAULT_LOG_LEVEL, 476 "9027: Array is missing a device and parity is out of sync"}, 477 {0x07278B00, 0, IPR_DEFAULT_LOG_LEVEL, 478 "9028: Maximum number of arrays already exist"}, 479 {0x07278C00, 0, IPR_DEFAULT_LOG_LEVEL, 480 "9050: Required cache data cannot be located for a disk unit"}, 481 {0x07278D00, 0, IPR_DEFAULT_LOG_LEVEL, 482 "9052: Cache data exists for a device that has been modified"}, 483 {0x07278F00, 0, IPR_DEFAULT_LOG_LEVEL, 484 "9054: IOA resources not available due to previous problems"}, 485 {0x07279100, 0, IPR_DEFAULT_LOG_LEVEL, 486 "9092: Disk unit requires initialization before use"}, 487 {0x07279200, 0, IPR_DEFAULT_LOG_LEVEL, 488 "9029: Incorrect hardware configuration change has been detected"}, 489 {0x07279600, 0, IPR_DEFAULT_LOG_LEVEL, 490 "9060: One or more disk pairs are missing from an array"}, 491 {0x07279700, 0, IPR_DEFAULT_LOG_LEVEL, 492 "9061: One or more disks are missing from an array"}, 493 {0x07279800, 0, IPR_DEFAULT_LOG_LEVEL, 494 "9062: One or more disks are missing from an array"}, 495 {0x07279900, 0, IPR_DEFAULT_LOG_LEVEL, 496 "9063: Maximum number of functional arrays has been exceeded"}, 497 {0x0B260000, 0, 0, 498 "Aborted command, invalid descriptor"}, 499 {0x0B5A0000, 0, 0, 500 "Command terminated by host"} 501}; 502 503static const struct ipr_ses_table_entry ipr_ses_table[] = { 504 { "2104-DL1 ", "XXXXXXXXXXXXXXXX", 80 }, 505 { "2104-TL1 ", "XXXXXXXXXXXXXXXX", 80 }, 506 { "HSBP07M P U2SCSI", "XXXXXXXXXXXXXXXX", 80 }, /* Hidive 7 slot */ 507 { "HSBP05M P U2SCSI", "XXXXXXXXXXXXXXXX", 80 }, /* Hidive 5 slot */ 508 { "HSBP05M S U2SCSI", "XXXXXXXXXXXXXXXX", 80 }, /* Bowtie */ 509 { "HSBP06E ASU2SCSI", "XXXXXXXXXXXXXXXX", 80 }, /* MartinFenning */ 510 { "2104-DU3 ", "XXXXXXXXXXXXXXXX", 160 }, 511 { "2104-TU3 ", "XXXXXXXXXXXXXXXX", 160 }, 512 { "HSBP04C RSU2SCSI", "XXXXXXX*XXXXXXXX", 160 }, 513 { "HSBP06E RSU2SCSI", "XXXXXXX*XXXXXXXX", 160 }, 514 { "St V1S2 ", "XXXXXXXXXXXXXXXX", 160 }, 515 { "HSBPD4M PU3SCSI", "XXXXXXX*XXXXXXXX", 160 }, 516 { "VSBPD1H U3SCSI", "XXXXXXX*XXXXXXXX", 160 } 517}; 518 519/* 520 * Function Prototypes 521 */ 522static int ipr_reset_alert(struct ipr_cmnd *); 523static void ipr_process_ccn(struct ipr_cmnd *); 524static void ipr_process_error(struct ipr_cmnd *); 525static void ipr_reset_ioa_job(struct ipr_cmnd *); 526static void ipr_initiate_ioa_reset(struct ipr_ioa_cfg *, 527 enum ipr_shutdown_type); 528 529#ifdef CONFIG_SCSI_IPR_TRACE 530/** 531 * ipr_trc_hook - Add a trace entry to the driver trace 532 * @ipr_cmd: ipr command struct 533 * @type: trace type 534 * @add_data: additional data 535 * 536 * Return value: 537 * none 538 **/ 539static void ipr_trc_hook(struct ipr_cmnd *ipr_cmd, 540 u8 type, u32 add_data) 541{ 542 struct ipr_trace_entry *trace_entry; 543 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 544 545 trace_entry = &ioa_cfg->trace[ioa_cfg->trace_index++]; 546 trace_entry->time = jiffies; 547 trace_entry->op_code = ipr_cmd->ioarcb.cmd_pkt.cdb[0]; 548 trace_entry->type = type; 549 if (ipr_cmd->ioa_cfg->sis64) 550 trace_entry->ata_op_code = ipr_cmd->i.ata_ioadl.regs.command; 551 else 552 trace_entry->ata_op_code = ipr_cmd->ioarcb.u.add_data.u.regs.command; 553 trace_entry->cmd_index = ipr_cmd->cmd_index & 0xff; 554 trace_entry->res_handle = ipr_cmd->ioarcb.res_handle; 555 trace_entry->u.add_data = add_data; 556} 557#else 558#define ipr_trc_hook(ipr_cmd, type, add_data) do { } while(0) 559#endif 560 561/** 562 * ipr_reinit_ipr_cmnd - Re-initialize an IPR Cmnd block for reuse 563 * @ipr_cmd: ipr command struct 564 * 565 * Return value: 566 * none 567 **/ 568static void ipr_reinit_ipr_cmnd(struct ipr_cmnd *ipr_cmd) 569{ 570 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb; 571 struct ipr_ioasa *ioasa = &ipr_cmd->s.ioasa; 572 struct ipr_ioasa64 *ioasa64 = &ipr_cmd->s.ioasa64; 573 dma_addr_t dma_addr = ipr_cmd->dma_addr; 574 575 memset(&ioarcb->cmd_pkt, 0, sizeof(struct ipr_cmd_pkt)); 576 ioarcb->data_transfer_length = 0; 577 ioarcb->read_data_transfer_length = 0; 578 ioarcb->ioadl_len = 0; 579 ioarcb->read_ioadl_len = 0; 580 581 if (ipr_cmd->ioa_cfg->sis64) { 582 ioarcb->u.sis64_addr_data.data_ioadl_addr = 583 cpu_to_be64(dma_addr + offsetof(struct ipr_cmnd, i.ioadl64)); 584 ioasa64->u.gata.status = 0; 585 } else { 586 ioarcb->write_ioadl_addr = 587 cpu_to_be32(dma_addr + offsetof(struct ipr_cmnd, i.ioadl)); 588 ioarcb->read_ioadl_addr = ioarcb->write_ioadl_addr; 589 ioasa->u.gata.status = 0; 590 } 591 592 ioasa->hdr.ioasc = 0; 593 ioasa->hdr.residual_data_len = 0; 594 ipr_cmd->scsi_cmd = NULL; 595 ipr_cmd->qc = NULL; 596 ipr_cmd->sense_buffer[0] = 0; 597 ipr_cmd->dma_use_sg = 0; 598} 599 600/** 601 * ipr_init_ipr_cmnd - Initialize an IPR Cmnd block 602 * @ipr_cmd: ipr command struct 603 * 604 * Return value: 605 * none 606 **/ 607static void ipr_init_ipr_cmnd(struct ipr_cmnd *ipr_cmd) 608{ 609 ipr_reinit_ipr_cmnd(ipr_cmd); 610 ipr_cmd->u.scratch = 0; 611 ipr_cmd->sibling = NULL; 612 init_timer(&ipr_cmd->timer); 613} 614 615/** 616 * ipr_get_free_ipr_cmnd - Get a free IPR Cmnd block 617 * @ioa_cfg: ioa config struct 618 * 619 * Return value: 620 * pointer to ipr command struct 621 **/ 622static 623struct ipr_cmnd *ipr_get_free_ipr_cmnd(struct ipr_ioa_cfg *ioa_cfg) 624{ 625 struct ipr_cmnd *ipr_cmd; 626 627 ipr_cmd = list_entry(ioa_cfg->free_q.next, struct ipr_cmnd, queue); 628 list_del(&ipr_cmd->queue); 629 ipr_init_ipr_cmnd(ipr_cmd); 630 631 return ipr_cmd; 632} 633 634/** 635 * ipr_mask_and_clear_interrupts - Mask all and clear specified interrupts 636 * @ioa_cfg: ioa config struct 637 * @clr_ints: interrupts to clear 638 * 639 * This function masks all interrupts on the adapter, then clears the 640 * interrupts specified in the mask 641 * 642 * Return value: 643 * none 644 **/ 645static void ipr_mask_and_clear_interrupts(struct ipr_ioa_cfg *ioa_cfg, 646 u32 clr_ints) 647{ 648 volatile u32 int_reg; 649 650 /* Stop new interrupts */ 651 ioa_cfg->allow_interrupts = 0; 652 653 /* Set interrupt mask to stop all new interrupts */ 654 if (ioa_cfg->sis64) 655 writeq(~0, ioa_cfg->regs.set_interrupt_mask_reg); 656 else 657 writel(~0, ioa_cfg->regs.set_interrupt_mask_reg); 658 659 /* Clear any pending interrupts */ 660 if (ioa_cfg->sis64) 661 writel(~0, ioa_cfg->regs.clr_interrupt_reg); 662 writel(clr_ints, ioa_cfg->regs.clr_interrupt_reg32); 663 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg); 664} 665 666/** 667 * ipr_save_pcix_cmd_reg - Save PCI-X command register 668 * @ioa_cfg: ioa config struct 669 * 670 * Return value: 671 * 0 on success / -EIO on failure 672 **/ 673static int ipr_save_pcix_cmd_reg(struct ipr_ioa_cfg *ioa_cfg) 674{ 675 int pcix_cmd_reg = pci_find_capability(ioa_cfg->pdev, PCI_CAP_ID_PCIX); 676 677 if (pcix_cmd_reg == 0) 678 return 0; 679 680 if (pci_read_config_word(ioa_cfg->pdev, pcix_cmd_reg + PCI_X_CMD, 681 &ioa_cfg->saved_pcix_cmd_reg) != PCIBIOS_SUCCESSFUL) { 682 dev_err(&ioa_cfg->pdev->dev, "Failed to save PCI-X command register\n"); 683 return -EIO; 684 } 685 686 ioa_cfg->saved_pcix_cmd_reg |= PCI_X_CMD_DPERR_E | PCI_X_CMD_ERO; 687 return 0; 688} 689 690/** 691 * ipr_set_pcix_cmd_reg - Setup PCI-X command register 692 * @ioa_cfg: ioa config struct 693 * 694 * Return value: 695 * 0 on success / -EIO on failure 696 **/ 697static int ipr_set_pcix_cmd_reg(struct ipr_ioa_cfg *ioa_cfg) 698{ 699 int pcix_cmd_reg = pci_find_capability(ioa_cfg->pdev, PCI_CAP_ID_PCIX); 700 701 if (pcix_cmd_reg) { 702 if (pci_write_config_word(ioa_cfg->pdev, pcix_cmd_reg + PCI_X_CMD, 703 ioa_cfg->saved_pcix_cmd_reg) != PCIBIOS_SUCCESSFUL) { 704 dev_err(&ioa_cfg->pdev->dev, "Failed to setup PCI-X command register\n"); 705 return -EIO; 706 } 707 } 708 709 return 0; 710} 711 712/** 713 * ipr_sata_eh_done - done function for aborted SATA commands 714 * @ipr_cmd: ipr command struct 715 * 716 * This function is invoked for ops generated to SATA 717 * devices which are being aborted. 718 * 719 * Return value: 720 * none 721 **/ 722static void ipr_sata_eh_done(struct ipr_cmnd *ipr_cmd) 723{ 724 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 725 struct ata_queued_cmd *qc = ipr_cmd->qc; 726 struct ipr_sata_port *sata_port = qc->ap->private_data; 727 728 qc->err_mask |= AC_ERR_OTHER; 729 sata_port->ioasa.status |= ATA_BUSY; 730 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q); 731 ata_qc_complete(qc); 732} 733 734/** 735 * ipr_scsi_eh_done - mid-layer done function for aborted ops 736 * @ipr_cmd: ipr command struct 737 * 738 * This function is invoked by the interrupt handler for 739 * ops generated by the SCSI mid-layer which are being aborted. 740 * 741 * Return value: 742 * none 743 **/ 744static void ipr_scsi_eh_done(struct ipr_cmnd *ipr_cmd) 745{ 746 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 747 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd; 748 749 scsi_cmd->result |= (DID_ERROR << 16); 750 751 scsi_dma_unmap(ipr_cmd->scsi_cmd); 752 scsi_cmd->scsi_done(scsi_cmd); 753 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q); 754} 755 756/** 757 * ipr_fail_all_ops - Fails all outstanding ops. 758 * @ioa_cfg: ioa config struct 759 * 760 * This function fails all outstanding ops. 761 * 762 * Return value: 763 * none 764 **/ 765static void ipr_fail_all_ops(struct ipr_ioa_cfg *ioa_cfg) 766{ 767 struct ipr_cmnd *ipr_cmd, *temp; 768 769 ENTER; 770 list_for_each_entry_safe(ipr_cmd, temp, &ioa_cfg->pending_q, queue) { 771 list_del(&ipr_cmd->queue); 772 773 ipr_cmd->s.ioasa.hdr.ioasc = cpu_to_be32(IPR_IOASC_IOA_WAS_RESET); 774 ipr_cmd->s.ioasa.hdr.ilid = cpu_to_be32(IPR_DRIVER_ILID); 775 776 if (ipr_cmd->scsi_cmd) 777 ipr_cmd->done = ipr_scsi_eh_done; 778 else if (ipr_cmd->qc) 779 ipr_cmd->done = ipr_sata_eh_done; 780 781 ipr_trc_hook(ipr_cmd, IPR_TRACE_FINISH, IPR_IOASC_IOA_WAS_RESET); 782 del_timer(&ipr_cmd->timer); 783 ipr_cmd->done(ipr_cmd); 784 } 785 786 LEAVE; 787} 788 789/** 790 * ipr_send_command - Send driver initiated requests. 791 * @ipr_cmd: ipr command struct 792 * 793 * This function sends a command to the adapter using the correct write call. 794 * In the case of sis64, calculate the ioarcb size required. Then or in the 795 * appropriate bits. 796 * 797 * Return value: 798 * none 799 **/ 800static void ipr_send_command(struct ipr_cmnd *ipr_cmd) 801{ 802 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 803 dma_addr_t send_dma_addr = ipr_cmd->dma_addr; 804 805 if (ioa_cfg->sis64) { 806 /* The default size is 256 bytes */ 807 send_dma_addr |= 0x1; 808 809 /* If the number of ioadls * size of ioadl > 128 bytes, 810 then use a 512 byte ioarcb */ 811 if (ipr_cmd->dma_use_sg * sizeof(struct ipr_ioadl64_desc) > 128 ) 812 send_dma_addr |= 0x4; 813 writeq(send_dma_addr, ioa_cfg->regs.ioarrin_reg); 814 } else 815 writel(send_dma_addr, ioa_cfg->regs.ioarrin_reg); 816} 817 818/** 819 * ipr_do_req - Send driver initiated requests. 820 * @ipr_cmd: ipr command struct 821 * @done: done function 822 * @timeout_func: timeout function 823 * @timeout: timeout value 824 * 825 * This function sends the specified command to the adapter with the 826 * timeout given. The done function is invoked on command completion. 827 * 828 * Return value: 829 * none 830 **/ 831static void ipr_do_req(struct ipr_cmnd *ipr_cmd, 832 void (*done) (struct ipr_cmnd *), 833 void (*timeout_func) (struct ipr_cmnd *), u32 timeout) 834{ 835 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 836 837 list_add_tail(&ipr_cmd->queue, &ioa_cfg->pending_q); 838 839 ipr_cmd->done = done; 840 841 ipr_cmd->timer.data = (unsigned long) ipr_cmd; 842 ipr_cmd->timer.expires = jiffies + timeout; 843 ipr_cmd->timer.function = (void (*)(unsigned long))timeout_func; 844 845 add_timer(&ipr_cmd->timer); 846 847 ipr_trc_hook(ipr_cmd, IPR_TRACE_START, 0); 848 849 mb(); 850 851 ipr_send_command(ipr_cmd); 852} 853 854/** 855 * ipr_internal_cmd_done - Op done function for an internally generated op. 856 * @ipr_cmd: ipr command struct 857 * 858 * This function is the op done function for an internally generated, 859 * blocking op. It simply wakes the sleeping thread. 860 * 861 * Return value: 862 * none 863 **/ 864static void ipr_internal_cmd_done(struct ipr_cmnd *ipr_cmd) 865{ 866 if (ipr_cmd->sibling) 867 ipr_cmd->sibling = NULL; 868 else 869 complete(&ipr_cmd->completion); 870} 871 872/** 873 * ipr_init_ioadl - initialize the ioadl for the correct SIS type 874 * @ipr_cmd: ipr command struct 875 * @dma_addr: dma address 876 * @len: transfer length 877 * @flags: ioadl flag value 878 * 879 * This function initializes an ioadl in the case where there is only a single 880 * descriptor. 881 * 882 * Return value: 883 * nothing 884 **/ 885static void ipr_init_ioadl(struct ipr_cmnd *ipr_cmd, dma_addr_t dma_addr, 886 u32 len, int flags) 887{ 888 struct ipr_ioadl_desc *ioadl = ipr_cmd->i.ioadl; 889 struct ipr_ioadl64_desc *ioadl64 = ipr_cmd->i.ioadl64; 890 891 ipr_cmd->dma_use_sg = 1; 892 893 if (ipr_cmd->ioa_cfg->sis64) { 894 ioadl64->flags = cpu_to_be32(flags); 895 ioadl64->data_len = cpu_to_be32(len); 896 ioadl64->address = cpu_to_be64(dma_addr); 897 898 ipr_cmd->ioarcb.ioadl_len = 899 cpu_to_be32(sizeof(struct ipr_ioadl64_desc)); 900 ipr_cmd->ioarcb.data_transfer_length = cpu_to_be32(len); 901 } else { 902 ioadl->flags_and_data_len = cpu_to_be32(flags | len); 903 ioadl->address = cpu_to_be32(dma_addr); 904 905 if (flags == IPR_IOADL_FLAGS_READ_LAST) { 906 ipr_cmd->ioarcb.read_ioadl_len = 907 cpu_to_be32(sizeof(struct ipr_ioadl_desc)); 908 ipr_cmd->ioarcb.read_data_transfer_length = cpu_to_be32(len); 909 } else { 910 ipr_cmd->ioarcb.ioadl_len = 911 cpu_to_be32(sizeof(struct ipr_ioadl_desc)); 912 ipr_cmd->ioarcb.data_transfer_length = cpu_to_be32(len); 913 } 914 } 915} 916 917/** 918 * ipr_send_blocking_cmd - Send command and sleep on its completion. 919 * @ipr_cmd: ipr command struct 920 * @timeout_func: function to invoke if command times out 921 * @timeout: timeout 922 * 923 * Return value: 924 * none 925 **/ 926static void ipr_send_blocking_cmd(struct ipr_cmnd *ipr_cmd, 927 void (*timeout_func) (struct ipr_cmnd *ipr_cmd), 928 u32 timeout) 929{ 930 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 931 932 init_completion(&ipr_cmd->completion); 933 ipr_do_req(ipr_cmd, ipr_internal_cmd_done, timeout_func, timeout); 934 935 spin_unlock_irq(ioa_cfg->host->host_lock); 936 wait_for_completion(&ipr_cmd->completion); 937 spin_lock_irq(ioa_cfg->host->host_lock); 938} 939 940/** 941 * ipr_send_hcam - Send an HCAM to the adapter. 942 * @ioa_cfg: ioa config struct 943 * @type: HCAM type 944 * @hostrcb: hostrcb struct 945 * 946 * This function will send a Host Controlled Async command to the adapter. 947 * If HCAMs are currently not allowed to be issued to the adapter, it will 948 * place the hostrcb on the free queue. 949 * 950 * Return value: 951 * none 952 **/ 953static void ipr_send_hcam(struct ipr_ioa_cfg *ioa_cfg, u8 type, 954 struct ipr_hostrcb *hostrcb) 955{ 956 struct ipr_cmnd *ipr_cmd; 957 struct ipr_ioarcb *ioarcb; 958 959 if (ioa_cfg->allow_cmds) { 960 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg); 961 list_add_tail(&ipr_cmd->queue, &ioa_cfg->pending_q); 962 list_add_tail(&hostrcb->queue, &ioa_cfg->hostrcb_pending_q); 963 964 ipr_cmd->u.hostrcb = hostrcb; 965 ioarcb = &ipr_cmd->ioarcb; 966 967 ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE); 968 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_HCAM; 969 ioarcb->cmd_pkt.cdb[0] = IPR_HOST_CONTROLLED_ASYNC; 970 ioarcb->cmd_pkt.cdb[1] = type; 971 ioarcb->cmd_pkt.cdb[7] = (sizeof(hostrcb->hcam) >> 8) & 0xff; 972 ioarcb->cmd_pkt.cdb[8] = sizeof(hostrcb->hcam) & 0xff; 973 974 ipr_init_ioadl(ipr_cmd, hostrcb->hostrcb_dma, 975 sizeof(hostrcb->hcam), IPR_IOADL_FLAGS_READ_LAST); 976 977 if (type == IPR_HCAM_CDB_OP_CODE_CONFIG_CHANGE) 978 ipr_cmd->done = ipr_process_ccn; 979 else 980 ipr_cmd->done = ipr_process_error; 981 982 ipr_trc_hook(ipr_cmd, IPR_TRACE_START, IPR_IOA_RES_ADDR); 983 984 mb(); 985 986 ipr_send_command(ipr_cmd); 987 } else { 988 list_add_tail(&hostrcb->queue, &ioa_cfg->hostrcb_free_q); 989 } 990} 991 992/** 993 * ipr_update_ata_class - Update the ata class in the resource entry 994 * @res: resource entry struct 995 * @proto: cfgte device bus protocol value 996 * 997 * Return value: 998 * none 999 **/ 1000static void ipr_update_ata_class(struct ipr_resource_entry *res, unsigned int proto) 1001{ 1002 switch(proto) { 1003 case IPR_PROTO_SATA: 1004 case IPR_PROTO_SAS_STP: 1005 res->ata_class = ATA_DEV_ATA; 1006 break; 1007 case IPR_PROTO_SATA_ATAPI: 1008 case IPR_PROTO_SAS_STP_ATAPI: 1009 res->ata_class = ATA_DEV_ATAPI; 1010 break; 1011 default: 1012 res->ata_class = ATA_DEV_UNKNOWN; 1013 break; 1014 }; 1015} 1016 1017/** 1018 * ipr_init_res_entry - Initialize a resource entry struct. 1019 * @res: resource entry struct 1020 * @cfgtew: config table entry wrapper struct 1021 * 1022 * Return value: 1023 * none 1024 **/ 1025static void ipr_init_res_entry(struct ipr_resource_entry *res, 1026 struct ipr_config_table_entry_wrapper *cfgtew) 1027{ 1028 int found = 0; 1029 unsigned int proto; 1030 struct ipr_ioa_cfg *ioa_cfg = res->ioa_cfg; 1031 struct ipr_resource_entry *gscsi_res = NULL; 1032 1033 res->needs_sync_complete = 0; 1034 res->in_erp = 0; 1035 res->add_to_ml = 0; 1036 res->del_from_ml = 0; 1037 res->resetting_device = 0; 1038 res->sdev = NULL; 1039 res->sata_port = NULL; 1040 1041 if (ioa_cfg->sis64) { 1042 proto = cfgtew->u.cfgte64->proto; 1043 res->res_flags = cfgtew->u.cfgte64->res_flags; 1044 res->qmodel = IPR_QUEUEING_MODEL64(res); 1045 res->type = cfgtew->u.cfgte64->res_type; 1046 1047 memcpy(res->res_path, &cfgtew->u.cfgte64->res_path, 1048 sizeof(res->res_path)); 1049 1050 res->bus = 0; 1051 memcpy(&res->dev_lun.scsi_lun, &cfgtew->u.cfgte64->lun, 1052 sizeof(res->dev_lun.scsi_lun)); 1053 res->lun = scsilun_to_int(&res->dev_lun); 1054 1055 if (res->type == IPR_RES_TYPE_GENERIC_SCSI) { 1056 list_for_each_entry(gscsi_res, &ioa_cfg->used_res_q, queue) { 1057 if (gscsi_res->dev_id == cfgtew->u.cfgte64->dev_id) { 1058 found = 1; 1059 res->target = gscsi_res->target; 1060 break; 1061 } 1062 } 1063 if (!found) { 1064 res->target = find_first_zero_bit(ioa_cfg->target_ids, 1065 ioa_cfg->max_devs_supported); 1066 set_bit(res->target, ioa_cfg->target_ids); 1067 } 1068 } else if (res->type == IPR_RES_TYPE_IOAFP) { 1069 res->bus = IPR_IOAFP_VIRTUAL_BUS; 1070 res->target = 0; 1071 } else if (res->type == IPR_RES_TYPE_ARRAY) { 1072 res->bus = IPR_ARRAY_VIRTUAL_BUS; 1073 res->target = find_first_zero_bit(ioa_cfg->array_ids, 1074 ioa_cfg->max_devs_supported); 1075 set_bit(res->target, ioa_cfg->array_ids); 1076 } else if (res->type == IPR_RES_TYPE_VOLUME_SET) { 1077 res->bus = IPR_VSET_VIRTUAL_BUS; 1078 res->target = find_first_zero_bit(ioa_cfg->vset_ids, 1079 ioa_cfg->max_devs_supported); 1080 set_bit(res->target, ioa_cfg->vset_ids); 1081 } else { 1082 res->target = find_first_zero_bit(ioa_cfg->target_ids, 1083 ioa_cfg->max_devs_supported); 1084 set_bit(res->target, ioa_cfg->target_ids); 1085 } 1086 } else { 1087 proto = cfgtew->u.cfgte->proto; 1088 res->qmodel = IPR_QUEUEING_MODEL(res); 1089 res->flags = cfgtew->u.cfgte->flags; 1090 if (res->flags & IPR_IS_IOA_RESOURCE) 1091 res->type = IPR_RES_TYPE_IOAFP; 1092 else 1093 res->type = cfgtew->u.cfgte->rsvd_subtype & 0x0f; 1094 1095 res->bus = cfgtew->u.cfgte->res_addr.bus; 1096 res->target = cfgtew->u.cfgte->res_addr.target; 1097 res->lun = cfgtew->u.cfgte->res_addr.lun; 1098 res->lun_wwn = get_unaligned_be64(cfgtew->u.cfgte->lun_wwn); 1099 } 1100 1101 ipr_update_ata_class(res, proto); 1102} 1103 1104/** 1105 * ipr_is_same_device - Determine if two devices are the same. 1106 * @res: resource entry struct 1107 * @cfgtew: config table entry wrapper struct 1108 * 1109 * Return value: 1110 * 1 if the devices are the same / 0 otherwise 1111 **/ 1112static int ipr_is_same_device(struct ipr_resource_entry *res, 1113 struct ipr_config_table_entry_wrapper *cfgtew) 1114{ 1115 if (res->ioa_cfg->sis64) { 1116 if (!memcmp(&res->dev_id, &cfgtew->u.cfgte64->dev_id, 1117 sizeof(cfgtew->u.cfgte64->dev_id)) && 1118 !memcmp(&res->dev_lun.scsi_lun, &cfgtew->u.cfgte64->lun, 1119 sizeof(cfgtew->u.cfgte64->lun))) { 1120 return 1; 1121 } 1122 } else { 1123 if (res->bus == cfgtew->u.cfgte->res_addr.bus && 1124 res->target == cfgtew->u.cfgte->res_addr.target && 1125 res->lun == cfgtew->u.cfgte->res_addr.lun) 1126 return 1; 1127 } 1128 1129 return 0; 1130} 1131 1132/** 1133 * ipr_format_res_path - Format the resource path for printing. 1134 * @res_path: resource path 1135 * @buf: buffer 1136 * 1137 * Return value: 1138 * pointer to buffer 1139 **/ 1140static char *ipr_format_res_path(u8 *res_path, char *buffer, int len) 1141{ 1142 int i; 1143 char *p = buffer; 1144 1145 *p = '\0'; 1146 p += snprintf(p, buffer + len - p, "%02X", res_path[0]); 1147 for (i = 1; res_path[i] != 0xff && ((i * 3) < len); i++) 1148 p += snprintf(p, buffer + len - p, "-%02X", res_path[i]); 1149 1150 return buffer; 1151} 1152 1153/** 1154 * ipr_update_res_entry - Update the resource entry. 1155 * @res: resource entry struct 1156 * @cfgtew: config table entry wrapper struct 1157 * 1158 * Return value: 1159 * none 1160 **/ 1161static void ipr_update_res_entry(struct ipr_resource_entry *res, 1162 struct ipr_config_table_entry_wrapper *cfgtew) 1163{ 1164 char buffer[IPR_MAX_RES_PATH_LENGTH]; 1165 unsigned int proto; 1166 int new_path = 0; 1167 1168 if (res->ioa_cfg->sis64) { 1169 res->flags = cfgtew->u.cfgte64->flags; 1170 res->res_flags = cfgtew->u.cfgte64->res_flags; 1171 res->type = cfgtew->u.cfgte64->res_type; 1172 1173 memcpy(&res->std_inq_data, &cfgtew->u.cfgte64->std_inq_data, 1174 sizeof(struct ipr_std_inq_data)); 1175 1176 res->qmodel = IPR_QUEUEING_MODEL64(res); 1177 proto = cfgtew->u.cfgte64->proto; 1178 res->res_handle = cfgtew->u.cfgte64->res_handle; 1179 res->dev_id = cfgtew->u.cfgte64->dev_id; 1180 1181 memcpy(&res->dev_lun.scsi_lun, &cfgtew->u.cfgte64->lun, 1182 sizeof(res->dev_lun.scsi_lun)); 1183 1184 if (memcmp(res->res_path, &cfgtew->u.cfgte64->res_path, 1185 sizeof(res->res_path))) { 1186 memcpy(res->res_path, &cfgtew->u.cfgte64->res_path, 1187 sizeof(res->res_path)); 1188 new_path = 1; 1189 } 1190 1191 if (res->sdev && new_path) 1192 sdev_printk(KERN_INFO, res->sdev, "Resource path: %s\n", 1193 ipr_format_res_path(res->res_path, buffer, 1194 sizeof(buffer))); 1195 } else { 1196 res->flags = cfgtew->u.cfgte->flags; 1197 if (res->flags & IPR_IS_IOA_RESOURCE) 1198 res->type = IPR_RES_TYPE_IOAFP; 1199 else 1200 res->type = cfgtew->u.cfgte->rsvd_subtype & 0x0f; 1201 1202 memcpy(&res->std_inq_data, &cfgtew->u.cfgte->std_inq_data, 1203 sizeof(struct ipr_std_inq_data)); 1204 1205 res->qmodel = IPR_QUEUEING_MODEL(res); 1206 proto = cfgtew->u.cfgte->proto; 1207 res->res_handle = cfgtew->u.cfgte->res_handle; 1208 } 1209 1210 ipr_update_ata_class(res, proto); 1211} 1212 1213/** 1214 * ipr_clear_res_target - Clear the bit in the bit map representing the target 1215 * for the resource. 1216 * @res: resource entry struct 1217 * @cfgtew: config table entry wrapper struct 1218 * 1219 * Return value: 1220 * none 1221 **/ 1222static void ipr_clear_res_target(struct ipr_resource_entry *res) 1223{ 1224 struct ipr_resource_entry *gscsi_res = NULL; 1225 struct ipr_ioa_cfg *ioa_cfg = res->ioa_cfg; 1226 1227 if (!ioa_cfg->sis64) 1228 return; 1229 1230 if (res->bus == IPR_ARRAY_VIRTUAL_BUS) 1231 clear_bit(res->target, ioa_cfg->array_ids); 1232 else if (res->bus == IPR_VSET_VIRTUAL_BUS) 1233 clear_bit(res->target, ioa_cfg->vset_ids); 1234 else if (res->bus == 0 && res->type == IPR_RES_TYPE_GENERIC_SCSI) { 1235 list_for_each_entry(gscsi_res, &ioa_cfg->used_res_q, queue) 1236 if (gscsi_res->dev_id == res->dev_id && gscsi_res != res) 1237 return; 1238 clear_bit(res->target, ioa_cfg->target_ids); 1239 1240 } else if (res->bus == 0) 1241 clear_bit(res->target, ioa_cfg->target_ids); 1242} 1243 1244/** 1245 * ipr_handle_config_change - Handle a config change from the adapter 1246 * @ioa_cfg: ioa config struct 1247 * @hostrcb: hostrcb 1248 * 1249 * Return value: 1250 * none 1251 **/ 1252static void ipr_handle_config_change(struct ipr_ioa_cfg *ioa_cfg, 1253 struct ipr_hostrcb *hostrcb) 1254{ 1255 struct ipr_resource_entry *res = NULL; 1256 struct ipr_config_table_entry_wrapper cfgtew; 1257 __be32 cc_res_handle; 1258 1259 u32 is_ndn = 1; 1260 1261 if (ioa_cfg->sis64) { 1262 cfgtew.u.cfgte64 = &hostrcb->hcam.u.ccn.u.cfgte64; 1263 cc_res_handle = cfgtew.u.cfgte64->res_handle; 1264 } else { 1265 cfgtew.u.cfgte = &hostrcb->hcam.u.ccn.u.cfgte; 1266 cc_res_handle = cfgtew.u.cfgte->res_handle; 1267 } 1268 1269 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) { 1270 if (res->res_handle == cc_res_handle) { 1271 is_ndn = 0; 1272 break; 1273 } 1274 } 1275 1276 if (is_ndn) { 1277 if (list_empty(&ioa_cfg->free_res_q)) { 1278 ipr_send_hcam(ioa_cfg, 1279 IPR_HCAM_CDB_OP_CODE_CONFIG_CHANGE, 1280 hostrcb); 1281 return; 1282 } 1283 1284 res = list_entry(ioa_cfg->free_res_q.next, 1285 struct ipr_resource_entry, queue); 1286 1287 list_del(&res->queue); 1288 ipr_init_res_entry(res, &cfgtew); 1289 list_add_tail(&res->queue, &ioa_cfg->used_res_q); 1290 } 1291 1292 ipr_update_res_entry(res, &cfgtew); 1293 1294 if (hostrcb->hcam.notify_type == IPR_HOST_RCB_NOTIF_TYPE_REM_ENTRY) { 1295 if (res->sdev) { 1296 res->del_from_ml = 1; 1297 res->res_handle = IPR_INVALID_RES_HANDLE; 1298 if (ioa_cfg->allow_ml_add_del) 1299 schedule_work(&ioa_cfg->work_q); 1300 } else { 1301 ipr_clear_res_target(res); 1302 list_move_tail(&res->queue, &ioa_cfg->free_res_q); 1303 } 1304 } else if (!res->sdev) { 1305 res->add_to_ml = 1; 1306 if (ioa_cfg->allow_ml_add_del) 1307 schedule_work(&ioa_cfg->work_q); 1308 } 1309 1310 ipr_send_hcam(ioa_cfg, IPR_HCAM_CDB_OP_CODE_CONFIG_CHANGE, hostrcb); 1311} 1312 1313/** 1314 * ipr_process_ccn - Op done function for a CCN. 1315 * @ipr_cmd: ipr command struct 1316 * 1317 * This function is the op done function for a configuration 1318 * change notification host controlled async from the adapter. 1319 * 1320 * Return value: 1321 * none 1322 **/ 1323static void ipr_process_ccn(struct ipr_cmnd *ipr_cmd) 1324{ 1325 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 1326 struct ipr_hostrcb *hostrcb = ipr_cmd->u.hostrcb; 1327 u32 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc); 1328 1329 list_del(&hostrcb->queue); 1330 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q); 1331 1332 if (ioasc) { 1333 if (ioasc != IPR_IOASC_IOA_WAS_RESET) 1334 dev_err(&ioa_cfg->pdev->dev, 1335 "Host RCB failed with IOASC: 0x%08X\n", ioasc); 1336 1337 ipr_send_hcam(ioa_cfg, IPR_HCAM_CDB_OP_CODE_CONFIG_CHANGE, hostrcb); 1338 } else { 1339 ipr_handle_config_change(ioa_cfg, hostrcb); 1340 } 1341} 1342 1343/** 1344 * strip_and_pad_whitespace - Strip and pad trailing whitespace. 1345 * @i: index into buffer 1346 * @buf: string to modify 1347 * 1348 * This function will strip all trailing whitespace, pad the end 1349 * of the string with a single space, and NULL terminate the string. 1350 * 1351 * Return value: 1352 * new length of string 1353 **/ 1354static int strip_and_pad_whitespace(int i, char *buf) 1355{ 1356 while (i && buf[i] == ' ') 1357 i--; 1358 buf[i+1] = ' '; 1359 buf[i+2] = '\0'; 1360 return i + 2; 1361} 1362 1363/** 1364 * ipr_log_vpd_compact - Log the passed extended VPD compactly. 1365 * @prefix: string to print at start of printk 1366 * @hostrcb: hostrcb pointer 1367 * @vpd: vendor/product id/sn struct 1368 * 1369 * Return value: 1370 * none 1371 **/ 1372static void ipr_log_vpd_compact(char *prefix, struct ipr_hostrcb *hostrcb, 1373 struct ipr_vpd *vpd) 1374{ 1375 char buffer[IPR_VENDOR_ID_LEN + IPR_PROD_ID_LEN + IPR_SERIAL_NUM_LEN + 3]; 1376 int i = 0; 1377 1378 memcpy(buffer, vpd->vpids.vendor_id, IPR_VENDOR_ID_LEN); 1379 i = strip_and_pad_whitespace(IPR_VENDOR_ID_LEN - 1, buffer); 1380 1381 memcpy(&buffer[i], vpd->vpids.product_id, IPR_PROD_ID_LEN); 1382 i = strip_and_pad_whitespace(i + IPR_PROD_ID_LEN - 1, buffer); 1383 1384 memcpy(&buffer[i], vpd->sn, IPR_SERIAL_NUM_LEN); 1385 buffer[IPR_SERIAL_NUM_LEN + i] = '\0'; 1386 1387 ipr_hcam_err(hostrcb, "%s VPID/SN: %s\n", prefix, buffer); 1388} 1389 1390/** 1391 * ipr_log_vpd - Log the passed VPD to the error log. 1392 * @vpd: vendor/product id/sn struct 1393 * 1394 * Return value: 1395 * none 1396 **/ 1397static void ipr_log_vpd(struct ipr_vpd *vpd) 1398{ 1399 char buffer[IPR_VENDOR_ID_LEN + IPR_PROD_ID_LEN 1400 + IPR_SERIAL_NUM_LEN]; 1401 1402 memcpy(buffer, vpd->vpids.vendor_id, IPR_VENDOR_ID_LEN); 1403 memcpy(buffer + IPR_VENDOR_ID_LEN, vpd->vpids.product_id, 1404 IPR_PROD_ID_LEN); 1405 buffer[IPR_VENDOR_ID_LEN + IPR_PROD_ID_LEN] = '\0'; 1406 ipr_err("Vendor/Product ID: %s\n", buffer); 1407 1408 memcpy(buffer, vpd->sn, IPR_SERIAL_NUM_LEN); 1409 buffer[IPR_SERIAL_NUM_LEN] = '\0'; 1410 ipr_err(" Serial Number: %s\n", buffer); 1411} 1412 1413/** 1414 * ipr_log_ext_vpd_compact - Log the passed extended VPD compactly. 1415 * @prefix: string to print at start of printk 1416 * @hostrcb: hostrcb pointer 1417 * @vpd: vendor/product id/sn/wwn struct 1418 * 1419 * Return value: 1420 * none 1421 **/ 1422static void ipr_log_ext_vpd_compact(char *prefix, struct ipr_hostrcb *hostrcb, 1423 struct ipr_ext_vpd *vpd) 1424{ 1425 ipr_log_vpd_compact(prefix, hostrcb, &vpd->vpd); 1426 ipr_hcam_err(hostrcb, "%s WWN: %08X%08X\n", prefix, 1427 be32_to_cpu(vpd->wwid[0]), be32_to_cpu(vpd->wwid[1])); 1428} 1429 1430/** 1431 * ipr_log_ext_vpd - Log the passed extended VPD to the error log. 1432 * @vpd: vendor/product id/sn/wwn struct 1433 * 1434 * Return value: 1435 * none 1436 **/ 1437static void ipr_log_ext_vpd(struct ipr_ext_vpd *vpd) 1438{ 1439 ipr_log_vpd(&vpd->vpd); 1440 ipr_err(" WWN: %08X%08X\n", be32_to_cpu(vpd->wwid[0]), 1441 be32_to_cpu(vpd->wwid[1])); 1442} 1443 1444/** 1445 * ipr_log_enhanced_cache_error - Log a cache error. 1446 * @ioa_cfg: ioa config struct 1447 * @hostrcb: hostrcb struct 1448 * 1449 * Return value: 1450 * none 1451 **/ 1452static void ipr_log_enhanced_cache_error(struct ipr_ioa_cfg *ioa_cfg, 1453 struct ipr_hostrcb *hostrcb) 1454{ 1455 struct ipr_hostrcb_type_12_error *error; 1456 1457 if (ioa_cfg->sis64) 1458 error = &hostrcb->hcam.u.error64.u.type_12_error; 1459 else 1460 error = &hostrcb->hcam.u.error.u.type_12_error; 1461 1462 ipr_err("-----Current Configuration-----\n"); 1463 ipr_err("Cache Directory Card Information:\n"); 1464 ipr_log_ext_vpd(&error->ioa_vpd); 1465 ipr_err("Adapter Card Information:\n"); 1466 ipr_log_ext_vpd(&error->cfc_vpd); 1467 1468 ipr_err("-----Expected Configuration-----\n"); 1469 ipr_err("Cache Directory Card Information:\n"); 1470 ipr_log_ext_vpd(&error->ioa_last_attached_to_cfc_vpd); 1471 ipr_err("Adapter Card Information:\n"); 1472 ipr_log_ext_vpd(&error->cfc_last_attached_to_ioa_vpd); 1473 1474 ipr_err("Additional IOA Data: %08X %08X %08X\n", 1475 be32_to_cpu(error->ioa_data[0]), 1476 be32_to_cpu(error->ioa_data[1]), 1477 be32_to_cpu(error->ioa_data[2])); 1478} 1479 1480/** 1481 * ipr_log_cache_error - Log a cache error. 1482 * @ioa_cfg: ioa config struct 1483 * @hostrcb: hostrcb struct 1484 * 1485 * Return value: 1486 * none 1487 **/ 1488static void ipr_log_cache_error(struct ipr_ioa_cfg *ioa_cfg, 1489 struct ipr_hostrcb *hostrcb) 1490{ 1491 struct ipr_hostrcb_type_02_error *error = 1492 &hostrcb->hcam.u.error.u.type_02_error; 1493 1494 ipr_err("-----Current Configuration-----\n"); 1495 ipr_err("Cache Directory Card Information:\n"); 1496 ipr_log_vpd(&error->ioa_vpd); 1497 ipr_err("Adapter Card Information:\n"); 1498 ipr_log_vpd(&error->cfc_vpd); 1499 1500 ipr_err("-----Expected Configuration-----\n"); 1501 ipr_err("Cache Directory Card Information:\n"); 1502 ipr_log_vpd(&error->ioa_last_attached_to_cfc_vpd); 1503 ipr_err("Adapter Card Information:\n"); 1504 ipr_log_vpd(&error->cfc_last_attached_to_ioa_vpd); 1505 1506 ipr_err("Additional IOA Data: %08X %08X %08X\n", 1507 be32_to_cpu(error->ioa_data[0]), 1508 be32_to_cpu(error->ioa_data[1]), 1509 be32_to_cpu(error->ioa_data[2])); 1510} 1511 1512/** 1513 * ipr_log_enhanced_config_error - Log a configuration error. 1514 * @ioa_cfg: ioa config struct 1515 * @hostrcb: hostrcb struct 1516 * 1517 * Return value: 1518 * none 1519 **/ 1520static void ipr_log_enhanced_config_error(struct ipr_ioa_cfg *ioa_cfg, 1521 struct ipr_hostrcb *hostrcb) 1522{ 1523 int errors_logged, i; 1524 struct ipr_hostrcb_device_data_entry_enhanced *dev_entry; 1525 struct ipr_hostrcb_type_13_error *error; 1526 1527 error = &hostrcb->hcam.u.error.u.type_13_error; 1528 errors_logged = be32_to_cpu(error->errors_logged); 1529 1530 ipr_err("Device Errors Detected/Logged: %d/%d\n", 1531 be32_to_cpu(error->errors_detected), errors_logged); 1532 1533 dev_entry = error->dev; 1534 1535 for (i = 0; i < errors_logged; i++, dev_entry++) { 1536 ipr_err_separator; 1537 1538 ipr_phys_res_err(ioa_cfg, dev_entry->dev_res_addr, "Device %d", i + 1); 1539 ipr_log_ext_vpd(&dev_entry->vpd); 1540 1541 ipr_err("-----New Device Information-----\n"); 1542 ipr_log_ext_vpd(&dev_entry->new_vpd); 1543 1544 ipr_err("Cache Directory Card Information:\n"); 1545 ipr_log_ext_vpd(&dev_entry->ioa_last_with_dev_vpd); 1546 1547 ipr_err("Adapter Card Information:\n"); 1548 ipr_log_ext_vpd(&dev_entry->cfc_last_with_dev_vpd); 1549 } 1550} 1551 1552/** 1553 * ipr_log_sis64_config_error - Log a device error. 1554 * @ioa_cfg: ioa config struct 1555 * @hostrcb: hostrcb struct 1556 * 1557 * Return value: 1558 * none 1559 **/ 1560static void ipr_log_sis64_config_error(struct ipr_ioa_cfg *ioa_cfg, 1561 struct ipr_hostrcb *hostrcb) 1562{ 1563 int errors_logged, i; 1564 struct ipr_hostrcb64_device_data_entry_enhanced *dev_entry; 1565 struct ipr_hostrcb_type_23_error *error; 1566 char buffer[IPR_MAX_RES_PATH_LENGTH]; 1567 1568 error = &hostrcb->hcam.u.error64.u.type_23_error; 1569 errors_logged = be32_to_cpu(error->errors_logged); 1570 1571 ipr_err("Device Errors Detected/Logged: %d/%d\n", 1572 be32_to_cpu(error->errors_detected), errors_logged); 1573 1574 dev_entry = error->dev; 1575 1576 for (i = 0; i < errors_logged; i++, dev_entry++) { 1577 ipr_err_separator; 1578 1579 ipr_err("Device %d : %s", i + 1, 1580 ipr_format_res_path(dev_entry->res_path, buffer, 1581 sizeof(buffer))); 1582 ipr_log_ext_vpd(&dev_entry->vpd); 1583 1584 ipr_err("-----New Device Information-----\n"); 1585 ipr_log_ext_vpd(&dev_entry->new_vpd); 1586 1587 ipr_err("Cache Directory Card Information:\n"); 1588 ipr_log_ext_vpd(&dev_entry->ioa_last_with_dev_vpd); 1589 1590 ipr_err("Adapter Card Information:\n"); 1591 ipr_log_ext_vpd(&dev_entry->cfc_last_with_dev_vpd); 1592 } 1593} 1594 1595/** 1596 * ipr_log_config_error - Log a configuration error. 1597 * @ioa_cfg: ioa config struct 1598 * @hostrcb: hostrcb struct 1599 * 1600 * Return value: 1601 * none 1602 **/ 1603static void ipr_log_config_error(struct ipr_ioa_cfg *ioa_cfg, 1604 struct ipr_hostrcb *hostrcb) 1605{ 1606 int errors_logged, i; 1607 struct ipr_hostrcb_device_data_entry *dev_entry; 1608 struct ipr_hostrcb_type_03_error *error; 1609 1610 error = &hostrcb->hcam.u.error.u.type_03_error; 1611 errors_logged = be32_to_cpu(error->errors_logged); 1612 1613 ipr_err("Device Errors Detected/Logged: %d/%d\n", 1614 be32_to_cpu(error->errors_detected), errors_logged); 1615 1616 dev_entry = error->dev; 1617 1618 for (i = 0; i < errors_logged; i++, dev_entry++) { 1619 ipr_err_separator; 1620 1621 ipr_phys_res_err(ioa_cfg, dev_entry->dev_res_addr, "Device %d", i + 1); 1622 ipr_log_vpd(&dev_entry->vpd); 1623 1624 ipr_err("-----New Device Information-----\n"); 1625 ipr_log_vpd(&dev_entry->new_vpd); 1626 1627 ipr_err("Cache Directory Card Information:\n"); 1628 ipr_log_vpd(&dev_entry->ioa_last_with_dev_vpd); 1629 1630 ipr_err("Adapter Card Information:\n"); 1631 ipr_log_vpd(&dev_entry->cfc_last_with_dev_vpd); 1632 1633 ipr_err("Additional IOA Data: %08X %08X %08X %08X %08X\n", 1634 be32_to_cpu(dev_entry->ioa_data[0]), 1635 be32_to_cpu(dev_entry->ioa_data[1]), 1636 be32_to_cpu(dev_entry->ioa_data[2]), 1637 be32_to_cpu(dev_entry->ioa_data[3]), 1638 be32_to_cpu(dev_entry->ioa_data[4])); 1639 } 1640} 1641 1642/** 1643 * ipr_log_enhanced_array_error - Log an array configuration error. 1644 * @ioa_cfg: ioa config struct 1645 * @hostrcb: hostrcb struct 1646 * 1647 * Return value: 1648 * none 1649 **/ 1650static void ipr_log_enhanced_array_error(struct ipr_ioa_cfg *ioa_cfg, 1651 struct ipr_hostrcb *hostrcb) 1652{ 1653 int i, num_entries; 1654 struct ipr_hostrcb_type_14_error *error; 1655 struct ipr_hostrcb_array_data_entry_enhanced *array_entry; 1656 const u8 zero_sn[IPR_SERIAL_NUM_LEN] = { [0 ... IPR_SERIAL_NUM_LEN-1] = '0' }; 1657 1658 error = &hostrcb->hcam.u.error.u.type_14_error; 1659 1660 ipr_err_separator; 1661 1662 ipr_err("RAID %s Array Configuration: %d:%d:%d:%d\n", 1663 error->protection_level, 1664 ioa_cfg->host->host_no, 1665 error->last_func_vset_res_addr.bus, 1666 error->last_func_vset_res_addr.target, 1667 error->last_func_vset_res_addr.lun); 1668 1669 ipr_err_separator; 1670 1671 array_entry = error->array_member; 1672 num_entries = min_t(u32, be32_to_cpu(error->num_entries), 1673 ARRAY_SIZE(error->array_member)); 1674 1675 for (i = 0; i < num_entries; i++, array_entry++) { 1676 if (!memcmp(array_entry->vpd.vpd.sn, zero_sn, IPR_SERIAL_NUM_LEN)) 1677 continue; 1678 1679 if (be32_to_cpu(error->exposed_mode_adn) == i) 1680 ipr_err("Exposed Array Member %d:\n", i); 1681 else 1682 ipr_err("Array Member %d:\n", i); 1683 1684 ipr_log_ext_vpd(&array_entry->vpd); 1685 ipr_phys_res_err(ioa_cfg, array_entry->dev_res_addr, "Current Location"); 1686 ipr_phys_res_err(ioa_cfg, array_entry->expected_dev_res_addr, 1687 "Expected Location"); 1688 1689 ipr_err_separator; 1690 } 1691} 1692 1693/** 1694 * ipr_log_array_error - Log an array configuration error. 1695 * @ioa_cfg: ioa config struct 1696 * @hostrcb: hostrcb struct 1697 * 1698 * Return value: 1699 * none 1700 **/ 1701static void ipr_log_array_error(struct ipr_ioa_cfg *ioa_cfg, 1702 struct ipr_hostrcb *hostrcb) 1703{ 1704 int i; 1705 struct ipr_hostrcb_type_04_error *error; 1706 struct ipr_hostrcb_array_data_entry *array_entry; 1707 const u8 zero_sn[IPR_SERIAL_NUM_LEN] = { [0 ... IPR_SERIAL_NUM_LEN-1] = '0' }; 1708 1709 error = &hostrcb->hcam.u.error.u.type_04_error; 1710 1711 ipr_err_separator; 1712 1713 ipr_err("RAID %s Array Configuration: %d:%d:%d:%d\n", 1714 error->protection_level, 1715 ioa_cfg->host->host_no, 1716 error->last_func_vset_res_addr.bus, 1717 error->last_func_vset_res_addr.target, 1718 error->last_func_vset_res_addr.lun); 1719 1720 ipr_err_separator; 1721 1722 array_entry = error->array_member; 1723 1724 for (i = 0; i < 18; i++) { 1725 if (!memcmp(array_entry->vpd.sn, zero_sn, IPR_SERIAL_NUM_LEN)) 1726 continue; 1727 1728 if (be32_to_cpu(error->exposed_mode_adn) == i) 1729 ipr_err("Exposed Array Member %d:\n", i); 1730 else 1731 ipr_err("Array Member %d:\n", i); 1732 1733 ipr_log_vpd(&array_entry->vpd); 1734 1735 ipr_phys_res_err(ioa_cfg, array_entry->dev_res_addr, "Current Location"); 1736 ipr_phys_res_err(ioa_cfg, array_entry->expected_dev_res_addr, 1737 "Expected Location"); 1738 1739 ipr_err_separator; 1740 1741 if (i == 9) 1742 array_entry = error->array_member2; 1743 else 1744 array_entry++; 1745 } 1746} 1747 1748/** 1749 * ipr_log_hex_data - Log additional hex IOA error data. 1750 * @ioa_cfg: ioa config struct 1751 * @data: IOA error data 1752 * @len: data length 1753 * 1754 * Return value: 1755 * none 1756 **/ 1757static void ipr_log_hex_data(struct ipr_ioa_cfg *ioa_cfg, u32 *data, int len) 1758{ 1759 int i; 1760 1761 if (len == 0) 1762 return; 1763 1764 if (ioa_cfg->log_level <= IPR_DEFAULT_LOG_LEVEL) 1765 len = min_t(int, len, IPR_DEFAULT_MAX_ERROR_DUMP); 1766 1767 for (i = 0; i < len / 4; i += 4) { 1768 ipr_err("%08X: %08X %08X %08X %08X\n", i*4, 1769 be32_to_cpu(data[i]), 1770 be32_to_cpu(data[i+1]), 1771 be32_to_cpu(data[i+2]), 1772 be32_to_cpu(data[i+3])); 1773 } 1774} 1775 1776/** 1777 * ipr_log_enhanced_dual_ioa_error - Log an enhanced dual adapter error. 1778 * @ioa_cfg: ioa config struct 1779 * @hostrcb: hostrcb struct 1780 * 1781 * Return value: 1782 * none 1783 **/ 1784static void ipr_log_enhanced_dual_ioa_error(struct ipr_ioa_cfg *ioa_cfg, 1785 struct ipr_hostrcb *hostrcb) 1786{ 1787 struct ipr_hostrcb_type_17_error *error; 1788 1789 if (ioa_cfg->sis64) 1790 error = &hostrcb->hcam.u.error64.u.type_17_error; 1791 else 1792 error = &hostrcb->hcam.u.error.u.type_17_error; 1793 1794 error->failure_reason[sizeof(error->failure_reason) - 1] = '\0'; 1795 strim(error->failure_reason); 1796 1797 ipr_hcam_err(hostrcb, "%s [PRC: %08X]\n", error->failure_reason, 1798 be32_to_cpu(hostrcb->hcam.u.error.prc)); 1799 ipr_log_ext_vpd_compact("Remote IOA", hostrcb, &error->vpd); 1800 ipr_log_hex_data(ioa_cfg, error->data, 1801 be32_to_cpu(hostrcb->hcam.length) - 1802 (offsetof(struct ipr_hostrcb_error, u) + 1803 offsetof(struct ipr_hostrcb_type_17_error, data))); 1804} 1805 1806/** 1807 * ipr_log_dual_ioa_error - Log a dual adapter error. 1808 * @ioa_cfg: ioa config struct 1809 * @hostrcb: hostrcb struct 1810 * 1811 * Return value: 1812 * none 1813 **/ 1814static void ipr_log_dual_ioa_error(struct ipr_ioa_cfg *ioa_cfg, 1815 struct ipr_hostrcb *hostrcb) 1816{ 1817 struct ipr_hostrcb_type_07_error *error; 1818 1819 error = &hostrcb->hcam.u.error.u.type_07_error; 1820 error->failure_reason[sizeof(error->failure_reason) - 1] = '\0'; 1821 strim(error->failure_reason); 1822 1823 ipr_hcam_err(hostrcb, "%s [PRC: %08X]\n", error->failure_reason, 1824 be32_to_cpu(hostrcb->hcam.u.error.prc)); 1825 ipr_log_vpd_compact("Remote IOA", hostrcb, &error->vpd); 1826 ipr_log_hex_data(ioa_cfg, error->data, 1827 be32_to_cpu(hostrcb->hcam.length) - 1828 (offsetof(struct ipr_hostrcb_error, u) + 1829 offsetof(struct ipr_hostrcb_type_07_error, data))); 1830} 1831 1832static const struct { 1833 u8 active; 1834 char *desc; 1835} path_active_desc[] = { 1836 { IPR_PATH_NO_INFO, "Path" }, 1837 { IPR_PATH_ACTIVE, "Active path" }, 1838 { IPR_PATH_NOT_ACTIVE, "Inactive path" } 1839}; 1840 1841static const struct { 1842 u8 state; 1843 char *desc; 1844} path_state_desc[] = { 1845 { IPR_PATH_STATE_NO_INFO, "has no path state information available" }, 1846 { IPR_PATH_HEALTHY, "is healthy" }, 1847 { IPR_PATH_DEGRADED, "is degraded" }, 1848 { IPR_PATH_FAILED, "is failed" } 1849}; 1850 1851/** 1852 * ipr_log_fabric_path - Log a fabric path error 1853 * @hostrcb: hostrcb struct 1854 * @fabric: fabric descriptor 1855 * 1856 * Return value: 1857 * none 1858 **/ 1859static void ipr_log_fabric_path(struct ipr_hostrcb *hostrcb, 1860 struct ipr_hostrcb_fabric_desc *fabric) 1861{ 1862 int i, j; 1863 u8 path_state = fabric->path_state; 1864 u8 active = path_state & IPR_PATH_ACTIVE_MASK; 1865 u8 state = path_state & IPR_PATH_STATE_MASK; 1866 1867 for (i = 0; i < ARRAY_SIZE(path_active_desc); i++) { 1868 if (path_active_desc[i].active != active) 1869 continue; 1870 1871 for (j = 0; j < ARRAY_SIZE(path_state_desc); j++) { 1872 if (path_state_desc[j].state != state) 1873 continue; 1874 1875 if (fabric->cascaded_expander == 0xff && fabric->phy == 0xff) { 1876 ipr_hcam_err(hostrcb, "%s %s: IOA Port=%d\n", 1877 path_active_desc[i].desc, path_state_desc[j].desc, 1878 fabric->ioa_port); 1879 } else if (fabric->cascaded_expander == 0xff) { 1880 ipr_hcam_err(hostrcb, "%s %s: IOA Port=%d, Phy=%d\n", 1881 path_active_desc[i].desc, path_state_desc[j].desc, 1882 fabric->ioa_port, fabric->phy); 1883 } else if (fabric->phy == 0xff) { 1884 ipr_hcam_err(hostrcb, "%s %s: IOA Port=%d, Cascade=%d\n", 1885 path_active_desc[i].desc, path_state_desc[j].desc, 1886 fabric->ioa_port, fabric->cascaded_expander); 1887 } else { 1888 ipr_hcam_err(hostrcb, "%s %s: IOA Port=%d, Cascade=%d, Phy=%d\n", 1889 path_active_desc[i].desc, path_state_desc[j].desc, 1890 fabric->ioa_port, fabric->cascaded_expander, fabric->phy); 1891 } 1892 return; 1893 } 1894 } 1895 1896 ipr_err("Path state=%02X IOA Port=%d Cascade=%d Phy=%d\n", path_state, 1897 fabric->ioa_port, fabric->cascaded_expander, fabric->phy); 1898} 1899 1900/** 1901 * ipr_log64_fabric_path - Log a fabric path error 1902 * @hostrcb: hostrcb struct 1903 * @fabric: fabric descriptor 1904 * 1905 * Return value: 1906 * none 1907 **/ 1908static void ipr_log64_fabric_path(struct ipr_hostrcb *hostrcb, 1909 struct ipr_hostrcb64_fabric_desc *fabric) 1910{ 1911 int i, j; 1912 u8 path_state = fabric->path_state; 1913 u8 active = path_state & IPR_PATH_ACTIVE_MASK; 1914 u8 state = path_state & IPR_PATH_STATE_MASK; 1915 char buffer[IPR_MAX_RES_PATH_LENGTH]; 1916 1917 for (i = 0; i < ARRAY_SIZE(path_active_desc); i++) { 1918 if (path_active_desc[i].active != active) 1919 continue; 1920 1921 for (j = 0; j < ARRAY_SIZE(path_state_desc); j++) { 1922 if (path_state_desc[j].state != state) 1923 continue; 1924 1925 ipr_hcam_err(hostrcb, "%s %s: Resource Path=%s\n", 1926 path_active_desc[i].desc, path_state_desc[j].desc, 1927 ipr_format_res_path(fabric->res_path, buffer, 1928 sizeof(buffer))); 1929 return; 1930 } 1931 } 1932 1933 ipr_err("Path state=%02X Resource Path=%s\n", path_state, 1934 ipr_format_res_path(fabric->res_path, buffer, sizeof(buffer))); 1935} 1936 1937static const struct { 1938 u8 type; 1939 char *desc; 1940} path_type_desc[] = { 1941 { IPR_PATH_CFG_IOA_PORT, "IOA port" }, 1942 { IPR_PATH_CFG_EXP_PORT, "Expander port" }, 1943 { IPR_PATH_CFG_DEVICE_PORT, "Device port" }, 1944 { IPR_PATH_CFG_DEVICE_LUN, "Device LUN" } 1945}; 1946 1947static const struct { 1948 u8 status; 1949 char *desc; 1950} path_status_desc[] = { 1951 { IPR_PATH_CFG_NO_PROB, "Functional" }, 1952 { IPR_PATH_CFG_DEGRADED, "Degraded" }, 1953 { IPR_PATH_CFG_FAILED, "Failed" }, 1954 { IPR_PATH_CFG_SUSPECT, "Suspect" }, 1955 { IPR_PATH_NOT_DETECTED, "Missing" }, 1956 { IPR_PATH_INCORRECT_CONN, "Incorrectly connected" } 1957}; 1958 1959static const char *link_rate[] = { 1960 "unknown", 1961 "disabled", 1962 "phy reset problem", 1963 "spinup hold", 1964 "port selector", 1965 "unknown", 1966 "unknown", 1967 "unknown", 1968 "1.5Gbps", 1969 "3.0Gbps", 1970 "unknown", 1971 "unknown", 1972 "unknown", 1973 "unknown", 1974 "unknown", 1975 "unknown" 1976}; 1977 1978/** 1979 * ipr_log_path_elem - Log a fabric path element. 1980 * @hostrcb: hostrcb struct 1981 * @cfg: fabric path element struct 1982 * 1983 * Return value: 1984 * none 1985 **/ 1986static void ipr_log_path_elem(struct ipr_hostrcb *hostrcb, 1987 struct ipr_hostrcb_config_element *cfg) 1988{ 1989 int i, j; 1990 u8 type = cfg->type_status & IPR_PATH_CFG_TYPE_MASK; 1991 u8 status = cfg->type_status & IPR_PATH_CFG_STATUS_MASK; 1992 1993 if (type == IPR_PATH_CFG_NOT_EXIST) 1994 return; 1995 1996 for (i = 0; i < ARRAY_SIZE(path_type_desc); i++) { 1997 if (path_type_desc[i].type != type) 1998 continue; 1999 2000 for (j = 0; j < ARRAY_SIZE(path_status_desc); j++) { 2001 if (path_status_desc[j].status != status) 2002 continue; 2003 2004 if (type == IPR_PATH_CFG_IOA_PORT) { 2005 ipr_hcam_err(hostrcb, "%s %s: Phy=%d, Link rate=%s, WWN=%08X%08X\n", 2006 path_status_desc[j].desc, path_type_desc[i].desc, 2007 cfg->phy, link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK], 2008 be32_to_cpu(cfg->wwid[0]), be32_to_cpu(cfg->wwid[1])); 2009 } else { 2010 if (cfg->cascaded_expander == 0xff && cfg->phy == 0xff) { 2011 ipr_hcam_err(hostrcb, "%s %s: Link rate=%s, WWN=%08X%08X\n", 2012 path_status_desc[j].desc, path_type_desc[i].desc, 2013 link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK], 2014 be32_to_cpu(cfg->wwid[0]), be32_to_cpu(cfg->wwid[1])); 2015 } else if (cfg->cascaded_expander == 0xff) { 2016 ipr_hcam_err(hostrcb, "%s %s: Phy=%d, Link rate=%s, " 2017 "WWN=%08X%08X\n", path_status_desc[j].desc, 2018 path_type_desc[i].desc, cfg->phy, 2019 link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK], 2020 be32_to_cpu(cfg->wwid[0]), be32_to_cpu(cfg->wwid[1])); 2021 } else if (cfg->phy == 0xff) { 2022 ipr_hcam_err(hostrcb, "%s %s: Cascade=%d, Link rate=%s, " 2023 "WWN=%08X%08X\n", path_status_desc[j].desc, 2024 path_type_desc[i].desc, cfg->cascaded_expander, 2025 link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK], 2026 be32_to_cpu(cfg->wwid[0]), be32_to_cpu(cfg->wwid[1])); 2027 } else { 2028 ipr_hcam_err(hostrcb, "%s %s: Cascade=%d, Phy=%d, Link rate=%s " 2029 "WWN=%08X%08X\n", path_status_desc[j].desc, 2030 path_type_desc[i].desc, cfg->cascaded_expander, cfg->phy, 2031 link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK], 2032 be32_to_cpu(cfg->wwid[0]), be32_to_cpu(cfg->wwid[1])); 2033 } 2034 } 2035 return; 2036 } 2037 } 2038 2039 ipr_hcam_err(hostrcb, "Path element=%02X: Cascade=%d Phy=%d Link rate=%s " 2040 "WWN=%08X%08X\n", cfg->type_status, cfg->cascaded_expander, cfg->phy, 2041 link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK], 2042 be32_to_cpu(cfg->wwid[0]), be32_to_cpu(cfg->wwid[1])); 2043} 2044 2045/** 2046 * ipr_log64_path_elem - Log a fabric path element. 2047 * @hostrcb: hostrcb struct 2048 * @cfg: fabric path element struct 2049 * 2050 * Return value: 2051 * none 2052 **/ 2053static void ipr_log64_path_elem(struct ipr_hostrcb *hostrcb, 2054 struct ipr_hostrcb64_config_element *cfg) 2055{ 2056 int i, j; 2057 u8 desc_id = cfg->descriptor_id & IPR_DESCRIPTOR_MASK; 2058 u8 type = cfg->type_status & IPR_PATH_CFG_TYPE_MASK; 2059 u8 status = cfg->type_status & IPR_PATH_CFG_STATUS_MASK; 2060 char buffer[IPR_MAX_RES_PATH_LENGTH]; 2061 2062 if (type == IPR_PATH_CFG_NOT_EXIST || desc_id != IPR_DESCRIPTOR_SIS64) 2063 return; 2064 2065 for (i = 0; i < ARRAY_SIZE(path_type_desc); i++) { 2066 if (path_type_desc[i].type != type) 2067 continue; 2068 2069 for (j = 0; j < ARRAY_SIZE(path_status_desc); j++) { 2070 if (path_status_desc[j].status != status) 2071 continue; 2072 2073 ipr_hcam_err(hostrcb, "%s %s: Resource Path=%s, Link rate=%s, WWN=%08X%08X\n", 2074 path_status_desc[j].desc, path_type_desc[i].desc, 2075 ipr_format_res_path(cfg->res_path, buffer, 2076 sizeof(buffer)), 2077 link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK], 2078 be32_to_cpu(cfg->wwid[0]), be32_to_cpu(cfg->wwid[1])); 2079 return; 2080 } 2081 } 2082 ipr_hcam_err(hostrcb, "Path element=%02X: Resource Path=%s, Link rate=%s " 2083 "WWN=%08X%08X\n", cfg->type_status, 2084 ipr_format_res_path(cfg->res_path, buffer, sizeof(buffer)), 2085 link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK], 2086 be32_to_cpu(cfg->wwid[0]), be32_to_cpu(cfg->wwid[1])); 2087} 2088 2089/** 2090 * ipr_log_fabric_error - Log a fabric error. 2091 * @ioa_cfg: ioa config struct 2092 * @hostrcb: hostrcb struct 2093 * 2094 * Return value: 2095 * none 2096 **/ 2097static void ipr_log_fabric_error(struct ipr_ioa_cfg *ioa_cfg, 2098 struct ipr_hostrcb *hostrcb) 2099{ 2100 struct ipr_hostrcb_type_20_error *error; 2101 struct ipr_hostrcb_fabric_desc *fabric; 2102 struct ipr_hostrcb_config_element *cfg; 2103 int i, add_len; 2104 2105 error = &hostrcb->hcam.u.error.u.type_20_error; 2106 error->failure_reason[sizeof(error->failure_reason) - 1] = '\0'; 2107 ipr_hcam_err(hostrcb, "%s\n", error->failure_reason); 2108 2109 add_len = be32_to_cpu(hostrcb->hcam.length) - 2110 (offsetof(struct ipr_hostrcb_error, u) + 2111 offsetof(struct ipr_hostrcb_type_20_error, desc)); 2112 2113 for (i = 0, fabric = error->desc; i < error->num_entries; i++) { 2114 ipr_log_fabric_path(hostrcb, fabric); 2115 for_each_fabric_cfg(fabric, cfg) 2116 ipr_log_path_elem(hostrcb, cfg); 2117 2118 add_len -= be16_to_cpu(fabric->length); 2119 fabric = (struct ipr_hostrcb_fabric_desc *) 2120 ((unsigned long)fabric + be16_to_cpu(fabric->length)); 2121 } 2122 2123 ipr_log_hex_data(ioa_cfg, (u32 *)fabric, add_len); 2124} 2125 2126/** 2127 * ipr_log_sis64_array_error - Log a sis64 array error. 2128 * @ioa_cfg: ioa config struct 2129 * @hostrcb: hostrcb struct 2130 * 2131 * Return value: 2132 * none 2133 **/ 2134static void ipr_log_sis64_array_error(struct ipr_ioa_cfg *ioa_cfg, 2135 struct ipr_hostrcb *hostrcb) 2136{ 2137 int i, num_entries; 2138 struct ipr_hostrcb_type_24_error *error; 2139 struct ipr_hostrcb64_array_data_entry *array_entry; 2140 char buffer[IPR_MAX_RES_PATH_LENGTH]; 2141 const u8 zero_sn[IPR_SERIAL_NUM_LEN] = { [0 ... IPR_SERIAL_NUM_LEN-1] = '0' }; 2142 2143 error = &hostrcb->hcam.u.error64.u.type_24_error; 2144 2145 ipr_err_separator; 2146 2147 ipr_err("RAID %s Array Configuration: %s\n", 2148 error->protection_level, 2149 ipr_format_res_path(error->last_res_path, buffer, sizeof(buffer))); 2150 2151 ipr_err_separator; 2152 2153 array_entry = error->array_member; 2154 num_entries = min_t(u32, error->num_entries, 2155 ARRAY_SIZE(error->array_member)); 2156 2157 for (i = 0; i < num_entries; i++, array_entry++) { 2158 2159 if (!memcmp(array_entry->vpd.vpd.sn, zero_sn, IPR_SERIAL_NUM_LEN)) 2160 continue; 2161 2162 if (error->exposed_mode_adn == i) 2163 ipr_err("Exposed Array Member %d:\n", i); 2164 else 2165 ipr_err("Array Member %d:\n", i); 2166 2167 ipr_err("Array Member %d:\n", i); 2168 ipr_log_ext_vpd(&array_entry->vpd); 2169 ipr_err("Current Location: %s\n", 2170 ipr_format_res_path(array_entry->res_path, buffer, 2171 sizeof(buffer))); 2172 ipr_err("Expected Location: %s\n", 2173 ipr_format_res_path(array_entry->expected_res_path, 2174 buffer, sizeof(buffer))); 2175 2176 ipr_err_separator; 2177 } 2178} 2179 2180/** 2181 * ipr_log_sis64_fabric_error - Log a sis64 fabric error. 2182 * @ioa_cfg: ioa config struct 2183 * @hostrcb: hostrcb struct 2184 * 2185 * Return value: 2186 * none 2187 **/ 2188static void ipr_log_sis64_fabric_error(struct ipr_ioa_cfg *ioa_cfg, 2189 struct ipr_hostrcb *hostrcb) 2190{ 2191 struct ipr_hostrcb_type_30_error *error; 2192 struct ipr_hostrcb64_fabric_desc *fabric; 2193 struct ipr_hostrcb64_config_element *cfg; 2194 int i, add_len; 2195 2196 error = &hostrcb->hcam.u.error64.u.type_30_error; 2197 2198 error->failure_reason[sizeof(error->failure_reason) - 1] = '\0'; 2199 ipr_hcam_err(hostrcb, "%s\n", error->failure_reason); 2200 2201 add_len = be32_to_cpu(hostrcb->hcam.length) - 2202 (offsetof(struct ipr_hostrcb64_error, u) + 2203 offsetof(struct ipr_hostrcb_type_30_error, desc)); 2204 2205 for (i = 0, fabric = error->desc; i < error->num_entries; i++) { 2206 ipr_log64_fabric_path(hostrcb, fabric); 2207 for_each_fabric_cfg(fabric, cfg) 2208 ipr_log64_path_elem(hostrcb, cfg); 2209 2210 add_len -= be16_to_cpu(fabric->length); 2211 fabric = (struct ipr_hostrcb64_fabric_desc *) 2212 ((unsigned long)fabric + be16_to_cpu(fabric->length)); 2213 } 2214 2215 ipr_log_hex_data(ioa_cfg, (u32 *)fabric, add_len); 2216} 2217 2218/** 2219 * ipr_log_generic_error - Log an adapter error. 2220 * @ioa_cfg: ioa config struct 2221 * @hostrcb: hostrcb struct 2222 * 2223 * Return value: 2224 * none 2225 **/ 2226static void ipr_log_generic_error(struct ipr_ioa_cfg *ioa_cfg, 2227 struct ipr_hostrcb *hostrcb) 2228{ 2229 ipr_log_hex_data(ioa_cfg, hostrcb->hcam.u.raw.data, 2230 be32_to_cpu(hostrcb->hcam.length)); 2231} 2232 2233/** 2234 * ipr_get_error - Find the specfied IOASC in the ipr_error_table. 2235 * @ioasc: IOASC 2236 * 2237 * This function will return the index of into the ipr_error_table 2238 * for the specified IOASC. If the IOASC is not in the table, 2239 * 0 will be returned, which points to the entry used for unknown errors. 2240 * 2241 * Return value: 2242 * index into the ipr_error_table 2243 **/ 2244static u32 ipr_get_error(u32 ioasc) 2245{ 2246 int i; 2247 2248 for (i = 0; i < ARRAY_SIZE(ipr_error_table); i++) 2249 if (ipr_error_table[i].ioasc == (ioasc & IPR_IOASC_IOASC_MASK)) 2250 return i; 2251 2252 return 0; 2253} 2254 2255/** 2256 * ipr_handle_log_data - Log an adapter error. 2257 * @ioa_cfg: ioa config struct 2258 * @hostrcb: hostrcb struct 2259 * 2260 * This function logs an adapter error to the system. 2261 * 2262 * Return value: 2263 * none 2264 **/ 2265static void ipr_handle_log_data(struct ipr_ioa_cfg *ioa_cfg, 2266 struct ipr_hostrcb *hostrcb) 2267{ 2268 u32 ioasc; 2269 int error_index; 2270 2271 if (hostrcb->hcam.notify_type != IPR_HOST_RCB_NOTIF_TYPE_ERROR_LOG_ENTRY) 2272 return; 2273 2274 if (hostrcb->hcam.notifications_lost == IPR_HOST_RCB_NOTIFICATIONS_LOST) 2275 dev_err(&ioa_cfg->pdev->dev, "Error notifications lost\n"); 2276 2277 if (ioa_cfg->sis64) 2278 ioasc = be32_to_cpu(hostrcb->hcam.u.error64.fd_ioasc); 2279 else 2280 ioasc = be32_to_cpu(hostrcb->hcam.u.error.fd_ioasc); 2281 2282 if (!ioa_cfg->sis64 && (ioasc == IPR_IOASC_BUS_WAS_RESET || 2283 ioasc == IPR_IOASC_BUS_WAS_RESET_BY_OTHER)) { 2284 /* Tell the midlayer we had a bus reset so it will handle the UA properly */ 2285 scsi_report_bus_reset(ioa_cfg->host, 2286 hostrcb->hcam.u.error.fd_res_addr.bus); 2287 } 2288 2289 error_index = ipr_get_error(ioasc); 2290 2291 if (!ipr_error_table[error_index].log_hcam) 2292 return; 2293 2294 ipr_hcam_err(hostrcb, "%s\n", ipr_error_table[error_index].error); 2295 2296 /* Set indication we have logged an error */ 2297 ioa_cfg->errors_logged++; 2298 2299 if (ioa_cfg->log_level < ipr_error_table[error_index].log_hcam) 2300 return; 2301 if (be32_to_cpu(hostrcb->hcam.length) > sizeof(hostrcb->hcam.u.raw)) 2302 hostrcb->hcam.length = cpu_to_be32(sizeof(hostrcb->hcam.u.raw)); 2303 2304 switch (hostrcb->hcam.overlay_id) { 2305 case IPR_HOST_RCB_OVERLAY_ID_2: 2306 ipr_log_cache_error(ioa_cfg, hostrcb); 2307 break; 2308 case IPR_HOST_RCB_OVERLAY_ID_3: 2309 ipr_log_config_error(ioa_cfg, hostrcb); 2310 break; 2311 case IPR_HOST_RCB_OVERLAY_ID_4: 2312 case IPR_HOST_RCB_OVERLAY_ID_6: 2313 ipr_log_array_error(ioa_cfg, hostrcb); 2314 break; 2315 case IPR_HOST_RCB_OVERLAY_ID_7: 2316 ipr_log_dual_ioa_error(ioa_cfg, hostrcb); 2317 break; 2318 case IPR_HOST_RCB_OVERLAY_ID_12: 2319 ipr_log_enhanced_cache_error(ioa_cfg, hostrcb); 2320 break; 2321 case IPR_HOST_RCB_OVERLAY_ID_13: 2322 ipr_log_enhanced_config_error(ioa_cfg, hostrcb); 2323 break; 2324 case IPR_HOST_RCB_OVERLAY_ID_14: 2325 case IPR_HOST_RCB_OVERLAY_ID_16: 2326 ipr_log_enhanced_array_error(ioa_cfg, hostrcb); 2327 break; 2328 case IPR_HOST_RCB_OVERLAY_ID_17: 2329 ipr_log_enhanced_dual_ioa_error(ioa_cfg, hostrcb); 2330 break; 2331 case IPR_HOST_RCB_OVERLAY_ID_20: 2332 ipr_log_fabric_error(ioa_cfg, hostrcb); 2333 break; 2334 case IPR_HOST_RCB_OVERLAY_ID_23: 2335 ipr_log_sis64_config_error(ioa_cfg, hostrcb); 2336 break; 2337 case IPR_HOST_RCB_OVERLAY_ID_24: 2338 case IPR_HOST_RCB_OVERLAY_ID_26: 2339 ipr_log_sis64_array_error(ioa_cfg, hostrcb); 2340 break; 2341 case IPR_HOST_RCB_OVERLAY_ID_30: 2342 ipr_log_sis64_fabric_error(ioa_cfg, hostrcb); 2343 break; 2344 case IPR_HOST_RCB_OVERLAY_ID_1: 2345 case IPR_HOST_RCB_OVERLAY_ID_DEFAULT: 2346 default: 2347 ipr_log_generic_error(ioa_cfg, hostrcb); 2348 break; 2349 } 2350} 2351 2352/** 2353 * ipr_process_error - Op done function for an adapter error log. 2354 * @ipr_cmd: ipr command struct 2355 * 2356 * This function is the op done function for an error log host 2357 * controlled async from the adapter. It will log the error and 2358 * send the HCAM back to the adapter. 2359 * 2360 * Return value: 2361 * none 2362 **/ 2363static void ipr_process_error(struct ipr_cmnd *ipr_cmd) 2364{ 2365 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 2366 struct ipr_hostrcb *hostrcb = ipr_cmd->u.hostrcb; 2367 u32 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc); 2368 u32 fd_ioasc; 2369 2370 if (ioa_cfg->sis64) 2371 fd_ioasc = be32_to_cpu(hostrcb->hcam.u.error64.fd_ioasc); 2372 else 2373 fd_ioasc = be32_to_cpu(hostrcb->hcam.u.error.fd_ioasc); 2374 2375 list_del(&hostrcb->queue); 2376 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q); 2377 2378 if (!ioasc) { 2379 ipr_handle_log_data(ioa_cfg, hostrcb); 2380 if (fd_ioasc == IPR_IOASC_NR_IOA_RESET_REQUIRED) 2381 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_ABBREV); 2382 } else if (ioasc != IPR_IOASC_IOA_WAS_RESET) { 2383 dev_err(&ioa_cfg->pdev->dev, 2384 "Host RCB failed with IOASC: 0x%08X\n", ioasc); 2385 } 2386 2387 ipr_send_hcam(ioa_cfg, IPR_HCAM_CDB_OP_CODE_LOG_DATA, hostrcb); 2388} 2389 2390/** 2391 * ipr_timeout - An internally generated op has timed out. 2392 * @ipr_cmd: ipr command struct 2393 * 2394 * This function blocks host requests and initiates an 2395 * adapter reset. 2396 * 2397 * Return value: 2398 * none 2399 **/ 2400static void ipr_timeout(struct ipr_cmnd *ipr_cmd) 2401{ 2402 unsigned long lock_flags = 0; 2403 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 2404 2405 ENTER; 2406 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 2407 2408 ioa_cfg->errors_logged++; 2409 dev_err(&ioa_cfg->pdev->dev, 2410 "Adapter being reset due to command timeout.\n"); 2411 2412 if (WAIT_FOR_DUMP == ioa_cfg->sdt_state) 2413 ioa_cfg->sdt_state = GET_DUMP; 2414 2415 if (!ioa_cfg->in_reset_reload || ioa_cfg->reset_cmd == ipr_cmd) 2416 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE); 2417 2418 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 2419 LEAVE; 2420} 2421 2422/** 2423 * ipr_oper_timeout - Adapter timed out transitioning to operational 2424 * @ipr_cmd: ipr command struct 2425 * 2426 * This function blocks host requests and initiates an 2427 * adapter reset. 2428 * 2429 * Return value: 2430 * none 2431 **/ 2432static void ipr_oper_timeout(struct ipr_cmnd *ipr_cmd) 2433{ 2434 unsigned long lock_flags = 0; 2435 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 2436 2437 ENTER; 2438 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 2439 2440 ioa_cfg->errors_logged++; 2441 dev_err(&ioa_cfg->pdev->dev, 2442 "Adapter timed out transitioning to operational.\n"); 2443 2444 if (WAIT_FOR_DUMP == ioa_cfg->sdt_state) 2445 ioa_cfg->sdt_state = GET_DUMP; 2446 2447 if (!ioa_cfg->in_reset_reload || ioa_cfg->reset_cmd == ipr_cmd) { 2448 if (ipr_fastfail) 2449 ioa_cfg->reset_retries += IPR_NUM_RESET_RELOAD_RETRIES; 2450 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE); 2451 } 2452 2453 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 2454 LEAVE; 2455} 2456 2457/** 2458 * ipr_reset_reload - Reset/Reload the IOA 2459 * @ioa_cfg: ioa config struct 2460 * @shutdown_type: shutdown type 2461 * 2462 * This function resets the adapter and re-initializes it. 2463 * This function assumes that all new host commands have been stopped. 2464 * Return value: 2465 * SUCCESS / FAILED 2466 **/ 2467static int ipr_reset_reload(struct ipr_ioa_cfg *ioa_cfg, 2468 enum ipr_shutdown_type shutdown_type) 2469{ 2470 if (!ioa_cfg->in_reset_reload) 2471 ipr_initiate_ioa_reset(ioa_cfg, shutdown_type); 2472 2473 spin_unlock_irq(ioa_cfg->host->host_lock); 2474 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload); 2475 spin_lock_irq(ioa_cfg->host->host_lock); 2476 2477 /* If we got hit with a host reset while we were already resetting 2478 the adapter for some reason, and the reset failed. */ 2479 if (ioa_cfg->ioa_is_dead) { 2480 ipr_trace; 2481 return FAILED; 2482 } 2483 2484 return SUCCESS; 2485} 2486 2487/** 2488 * ipr_find_ses_entry - Find matching SES in SES table 2489 * @res: resource entry struct of SES 2490 * 2491 * Return value: 2492 * pointer to SES table entry / NULL on failure 2493 **/ 2494static const struct ipr_ses_table_entry * 2495ipr_find_ses_entry(struct ipr_resource_entry *res) 2496{ 2497 int i, j, matches; 2498 struct ipr_std_inq_vpids *vpids; 2499 const struct ipr_ses_table_entry *ste = ipr_ses_table; 2500 2501 for (i = 0; i < ARRAY_SIZE(ipr_ses_table); i++, ste++) { 2502 for (j = 0, matches = 0; j < IPR_PROD_ID_LEN; j++) { 2503 if (ste->compare_product_id_byte[j] == 'X') { 2504 vpids = &res->std_inq_data.vpids; 2505 if (vpids->product_id[j] == ste->product_id[j]) 2506 matches++; 2507 else 2508 break; 2509 } else 2510 matches++; 2511 } 2512 2513 if (matches == IPR_PROD_ID_LEN) 2514 return ste; 2515 } 2516 2517 return NULL; 2518} 2519 2520/** 2521 * ipr_get_max_scsi_speed - Determine max SCSI speed for a given bus 2522 * @ioa_cfg: ioa config struct 2523 * @bus: SCSI bus 2524 * @bus_width: bus width 2525 * 2526 * Return value: 2527 * SCSI bus speed in units of 100KHz, 1600 is 160 MHz 2528 * For a 2-byte wide SCSI bus, the maximum transfer speed is 2529 * twice the maximum transfer rate (e.g. for a wide enabled bus, 2530 * max 160MHz = max 320MB/sec). 2531 **/ 2532static u32 ipr_get_max_scsi_speed(struct ipr_ioa_cfg *ioa_cfg, u8 bus, u8 bus_width) 2533{ 2534 struct ipr_resource_entry *res; 2535 const struct ipr_ses_table_entry *ste; 2536 u32 max_xfer_rate = IPR_MAX_SCSI_RATE(bus_width); 2537 2538 /* Loop through each config table entry in the config table buffer */ 2539 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) { 2540 if (!(IPR_IS_SES_DEVICE(res->std_inq_data))) 2541 continue; 2542 2543 if (bus != res->bus) 2544 continue; 2545 2546 if (!(ste = ipr_find_ses_entry(res))) 2547 continue; 2548 2549 max_xfer_rate = (ste->max_bus_speed_limit * 10) / (bus_width / 8); 2550 } 2551 2552 return max_xfer_rate; 2553} 2554 2555/** 2556 * ipr_wait_iodbg_ack - Wait for an IODEBUG ACK from the IOA 2557 * @ioa_cfg: ioa config struct 2558 * @max_delay: max delay in micro-seconds to wait 2559 * 2560 * Waits for an IODEBUG ACK from the IOA, doing busy looping. 2561 * 2562 * Return value: 2563 * 0 on success / other on failure 2564 **/ 2565static int ipr_wait_iodbg_ack(struct ipr_ioa_cfg *ioa_cfg, int max_delay) 2566{ 2567 volatile u32 pcii_reg; 2568 int delay = 1; 2569 2570 /* Read interrupt reg until IOA signals IO Debug Acknowledge */ 2571 while (delay < max_delay) { 2572 pcii_reg = readl(ioa_cfg->regs.sense_interrupt_reg); 2573 2574 if (pcii_reg & IPR_PCII_IO_DEBUG_ACKNOWLEDGE) 2575 return 0; 2576 2577 /* udelay cannot be used if delay is more than a few milliseconds */ 2578 if ((delay / 1000) > MAX_UDELAY_MS) 2579 mdelay(delay / 1000); 2580 else 2581 udelay(delay); 2582 2583 delay += delay; 2584 } 2585 return -EIO; 2586} 2587 2588/** 2589 * ipr_get_sis64_dump_data_section - Dump IOA memory 2590 * @ioa_cfg: ioa config struct 2591 * @start_addr: adapter address to dump 2592 * @dest: destination kernel buffer 2593 * @length_in_words: length to dump in 4 byte words 2594 * 2595 * Return value: 2596 * 0 on success 2597 **/ 2598static int ipr_get_sis64_dump_data_section(struct ipr_ioa_cfg *ioa_cfg, 2599 u32 start_addr, 2600 __be32 *dest, u32 length_in_words) 2601{ 2602 int i; 2603 2604 for (i = 0; i < length_in_words; i++) { 2605 writel(start_addr+(i*4), ioa_cfg->regs.dump_addr_reg); 2606 *dest = cpu_to_be32(readl(ioa_cfg->regs.dump_data_reg)); 2607 dest++; 2608 } 2609 2610 return 0; 2611} 2612 2613/** 2614 * ipr_get_ldump_data_section - Dump IOA memory 2615 * @ioa_cfg: ioa config struct 2616 * @start_addr: adapter address to dump 2617 * @dest: destination kernel buffer 2618 * @length_in_words: length to dump in 4 byte words 2619 * 2620 * Return value: 2621 * 0 on success / -EIO on failure 2622 **/ 2623static int ipr_get_ldump_data_section(struct ipr_ioa_cfg *ioa_cfg, 2624 u32 start_addr, 2625 __be32 *dest, u32 length_in_words) 2626{ 2627 volatile u32 temp_pcii_reg; 2628 int i, delay = 0; 2629 2630 if (ioa_cfg->sis64) 2631 return ipr_get_sis64_dump_data_section(ioa_cfg, start_addr, 2632 dest, length_in_words); 2633 2634 /* Write IOA interrupt reg starting LDUMP state */ 2635 writel((IPR_UPROCI_RESET_ALERT | IPR_UPROCI_IO_DEBUG_ALERT), 2636 ioa_cfg->regs.set_uproc_interrupt_reg32); 2637 2638 /* Wait for IO debug acknowledge */ 2639 if (ipr_wait_iodbg_ack(ioa_cfg, 2640 IPR_LDUMP_MAX_LONG_ACK_DELAY_IN_USEC)) { 2641 dev_err(&ioa_cfg->pdev->dev, 2642 "IOA dump long data transfer timeout\n"); 2643 return -EIO; 2644 } 2645 2646 /* Signal LDUMP interlocked - clear IO debug ack */ 2647 writel(IPR_PCII_IO_DEBUG_ACKNOWLEDGE, 2648 ioa_cfg->regs.clr_interrupt_reg); 2649 2650 /* Write Mailbox with starting address */ 2651 writel(start_addr, ioa_cfg->ioa_mailbox); 2652 2653 /* Signal address valid - clear IOA Reset alert */ 2654 writel(IPR_UPROCI_RESET_ALERT, 2655 ioa_cfg->regs.clr_uproc_interrupt_reg32); 2656 2657 for (i = 0; i < length_in_words; i++) { 2658 /* Wait for IO debug acknowledge */ 2659 if (ipr_wait_iodbg_ack(ioa_cfg, 2660 IPR_LDUMP_MAX_SHORT_ACK_DELAY_IN_USEC)) { 2661 dev_err(&ioa_cfg->pdev->dev, 2662 "IOA dump short data transfer timeout\n"); 2663 return -EIO; 2664 } 2665 2666 /* Read data from mailbox and increment destination pointer */ 2667 *dest = cpu_to_be32(readl(ioa_cfg->ioa_mailbox)); 2668 dest++; 2669 2670 /* For all but the last word of data, signal data received */ 2671 if (i < (length_in_words - 1)) { 2672 /* Signal dump data received - Clear IO debug Ack */ 2673 writel(IPR_PCII_IO_DEBUG_ACKNOWLEDGE, 2674 ioa_cfg->regs.clr_interrupt_reg); 2675 } 2676 } 2677 2678 /* Signal end of block transfer. Set reset alert then clear IO debug ack */ 2679 writel(IPR_UPROCI_RESET_ALERT, 2680 ioa_cfg->regs.set_uproc_interrupt_reg32); 2681 2682 writel(IPR_UPROCI_IO_DEBUG_ALERT, 2683 ioa_cfg->regs.clr_uproc_interrupt_reg32); 2684 2685 /* Signal dump data received - Clear IO debug Ack */ 2686 writel(IPR_PCII_IO_DEBUG_ACKNOWLEDGE, 2687 ioa_cfg->regs.clr_interrupt_reg); 2688 2689 /* Wait for IOA to signal LDUMP exit - IOA reset alert will be cleared */ 2690 while (delay < IPR_LDUMP_MAX_SHORT_ACK_DELAY_IN_USEC) { 2691 temp_pcii_reg = 2692 readl(ioa_cfg->regs.sense_uproc_interrupt_reg32); 2693 2694 if (!(temp_pcii_reg & IPR_UPROCI_RESET_ALERT)) 2695 return 0; 2696 2697 udelay(10); 2698 delay += 10; 2699 } 2700 2701 return 0; 2702} 2703 2704#ifdef CONFIG_SCSI_IPR_DUMP 2705/** 2706 * ipr_sdt_copy - Copy Smart Dump Table to kernel buffer 2707 * @ioa_cfg: ioa config struct 2708 * @pci_address: adapter address 2709 * @length: length of data to copy 2710 * 2711 * Copy data from PCI adapter to kernel buffer. 2712 * Note: length MUST be a 4 byte multiple 2713 * Return value: 2714 * 0 on success / other on failure 2715 **/ 2716static int ipr_sdt_copy(struct ipr_ioa_cfg *ioa_cfg, 2717 unsigned long pci_address, u32 length) 2718{ 2719 int bytes_copied = 0; 2720 int cur_len, rc, rem_len, rem_page_len; 2721 __be32 *page; 2722 unsigned long lock_flags = 0; 2723 struct ipr_ioa_dump *ioa_dump = &ioa_cfg->dump->ioa_dump; 2724 2725 while (bytes_copied < length && 2726 (ioa_dump->hdr.len + bytes_copied) < IPR_MAX_IOA_DUMP_SIZE) { 2727 if (ioa_dump->page_offset >= PAGE_SIZE || 2728 ioa_dump->page_offset == 0) { 2729 page = (__be32 *)__get_free_page(GFP_ATOMIC); 2730 2731 if (!page) { 2732 ipr_trace; 2733 return bytes_copied; 2734 } 2735 2736 ioa_dump->page_offset = 0; 2737 ioa_dump->ioa_data[ioa_dump->next_page_index] = page; 2738 ioa_dump->next_page_index++; 2739 } else 2740 page = ioa_dump->ioa_data[ioa_dump->next_page_index - 1]; 2741 2742 rem_len = length - bytes_copied; 2743 rem_page_len = PAGE_SIZE - ioa_dump->page_offset; 2744 cur_len = min(rem_len, rem_page_len); 2745 2746 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 2747 if (ioa_cfg->sdt_state == ABORT_DUMP) { 2748 rc = -EIO; 2749 } else { 2750 rc = ipr_get_ldump_data_section(ioa_cfg, 2751 pci_address + bytes_copied, 2752 &page[ioa_dump->page_offset / 4], 2753 (cur_len / sizeof(u32))); 2754 } 2755 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 2756 2757 if (!rc) { 2758 ioa_dump->page_offset += cur_len; 2759 bytes_copied += cur_len; 2760 } else { 2761 ipr_trace; 2762 break; 2763 } 2764 schedule(); 2765 } 2766 2767 return bytes_copied; 2768} 2769 2770/** 2771 * ipr_init_dump_entry_hdr - Initialize a dump entry header. 2772 * @hdr: dump entry header struct 2773 * 2774 * Return value: 2775 * nothing 2776 **/ 2777static void ipr_init_dump_entry_hdr(struct ipr_dump_entry_header *hdr) 2778{ 2779 hdr->eye_catcher = IPR_DUMP_EYE_CATCHER; 2780 hdr->num_elems = 1; 2781 hdr->offset = sizeof(*hdr); 2782 hdr->status = IPR_DUMP_STATUS_SUCCESS; 2783} 2784 2785/** 2786 * ipr_dump_ioa_type_data - Fill in the adapter type in the dump. 2787 * @ioa_cfg: ioa config struct 2788 * @driver_dump: driver dump struct 2789 * 2790 * Return value: 2791 * nothing 2792 **/ 2793static void ipr_dump_ioa_type_data(struct ipr_ioa_cfg *ioa_cfg, 2794 struct ipr_driver_dump *driver_dump) 2795{ 2796 struct ipr_inquiry_page3 *ucode_vpd = &ioa_cfg->vpd_cbs->page3_data; 2797 2798 ipr_init_dump_entry_hdr(&driver_dump->ioa_type_entry.hdr); 2799 driver_dump->ioa_type_entry.hdr.len = 2800 sizeof(struct ipr_dump_ioa_type_entry) - 2801 sizeof(struct ipr_dump_entry_header); 2802 driver_dump->ioa_type_entry.hdr.data_type = IPR_DUMP_DATA_TYPE_BINARY; 2803 driver_dump->ioa_type_entry.hdr.id = IPR_DUMP_DRIVER_TYPE_ID; 2804 driver_dump->ioa_type_entry.type = ioa_cfg->type; 2805 driver_dump->ioa_type_entry.fw_version = (ucode_vpd->major_release << 24) | 2806 (ucode_vpd->card_type << 16) | (ucode_vpd->minor_release[0] << 8) | 2807 ucode_vpd->minor_release[1]; 2808 driver_dump->hdr.num_entries++; 2809} 2810 2811/** 2812 * ipr_dump_version_data - Fill in the driver version in the dump. 2813 * @ioa_cfg: ioa config struct 2814 * @driver_dump: driver dump struct 2815 * 2816 * Return value: 2817 * nothing 2818 **/ 2819static void ipr_dump_version_data(struct ipr_ioa_cfg *ioa_cfg, 2820 struct ipr_driver_dump *driver_dump) 2821{ 2822 ipr_init_dump_entry_hdr(&driver_dump->version_entry.hdr); 2823 driver_dump->version_entry.hdr.len = 2824 sizeof(struct ipr_dump_version_entry) - 2825 sizeof(struct ipr_dump_entry_header); 2826 driver_dump->version_entry.hdr.data_type = IPR_DUMP_DATA_TYPE_ASCII; 2827 driver_dump->version_entry.hdr.id = IPR_DUMP_DRIVER_VERSION_ID; 2828 strcpy(driver_dump->version_entry.version, IPR_DRIVER_VERSION); 2829 driver_dump->hdr.num_entries++; 2830} 2831 2832/** 2833 * ipr_dump_trace_data - Fill in the IOA trace in the dump. 2834 * @ioa_cfg: ioa config struct 2835 * @driver_dump: driver dump struct 2836 * 2837 * Return value: 2838 * nothing 2839 **/ 2840static void ipr_dump_trace_data(struct ipr_ioa_cfg *ioa_cfg, 2841 struct ipr_driver_dump *driver_dump) 2842{ 2843 ipr_init_dump_entry_hdr(&driver_dump->trace_entry.hdr); 2844 driver_dump->trace_entry.hdr.len = 2845 sizeof(struct ipr_dump_trace_entry) - 2846 sizeof(struct ipr_dump_entry_header); 2847 driver_dump->trace_entry.hdr.data_type = IPR_DUMP_DATA_TYPE_BINARY; 2848 driver_dump->trace_entry.hdr.id = IPR_DUMP_TRACE_ID; 2849 memcpy(driver_dump->trace_entry.trace, ioa_cfg->trace, IPR_TRACE_SIZE); 2850 driver_dump->hdr.num_entries++; 2851} 2852 2853/** 2854 * ipr_dump_location_data - Fill in the IOA location in the dump. 2855 * @ioa_cfg: ioa config struct 2856 * @driver_dump: driver dump struct 2857 * 2858 * Return value: 2859 * nothing 2860 **/ 2861static void ipr_dump_location_data(struct ipr_ioa_cfg *ioa_cfg, 2862 struct ipr_driver_dump *driver_dump) 2863{ 2864 ipr_init_dump_entry_hdr(&driver_dump->location_entry.hdr); 2865 driver_dump->location_entry.hdr.len = 2866 sizeof(struct ipr_dump_location_entry) - 2867 sizeof(struct ipr_dump_entry_header); 2868 driver_dump->location_entry.hdr.data_type = IPR_DUMP_DATA_TYPE_ASCII; 2869 driver_dump->location_entry.hdr.id = IPR_DUMP_LOCATION_ID; 2870 strcpy(driver_dump->location_entry.location, dev_name(&ioa_cfg->pdev->dev)); 2871 driver_dump->hdr.num_entries++; 2872} 2873 2874/** 2875 * ipr_get_ioa_dump - Perform a dump of the driver and adapter. 2876 * @ioa_cfg: ioa config struct 2877 * @dump: dump struct 2878 * 2879 * Return value: 2880 * nothing 2881 **/ 2882static void ipr_get_ioa_dump(struct ipr_ioa_cfg *ioa_cfg, struct ipr_dump *dump) 2883{ 2884 unsigned long start_addr, sdt_word; 2885 unsigned long lock_flags = 0; 2886 struct ipr_driver_dump *driver_dump = &dump->driver_dump; 2887 struct ipr_ioa_dump *ioa_dump = &dump->ioa_dump; 2888 u32 num_entries, start_off, end_off; 2889 u32 bytes_to_copy, bytes_copied, rc; 2890 struct ipr_sdt *sdt; 2891 int valid = 1; 2892 int i; 2893 2894 ENTER; 2895 2896 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 2897 2898 if (ioa_cfg->sdt_state != GET_DUMP) { 2899 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 2900 return; 2901 } 2902 2903 if (ioa_cfg->sis64) { 2904 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 2905 ssleep(IPR_DUMP_DELAY_SECONDS); 2906 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 2907 } 2908 2909 start_addr = readl(ioa_cfg->ioa_mailbox); 2910 2911 if (!ioa_cfg->sis64 && !ipr_sdt_is_fmt2(start_addr)) { 2912 dev_err(&ioa_cfg->pdev->dev, 2913 "Invalid dump table format: %lx\n", start_addr); 2914 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 2915 return; 2916 } 2917 2918 dev_err(&ioa_cfg->pdev->dev, "Dump of IOA initiated\n"); 2919 2920 driver_dump->hdr.eye_catcher = IPR_DUMP_EYE_CATCHER; 2921 2922 /* Initialize the overall dump header */ 2923 driver_dump->hdr.len = sizeof(struct ipr_driver_dump); 2924 driver_dump->hdr.num_entries = 1; 2925 driver_dump->hdr.first_entry_offset = sizeof(struct ipr_dump_header); 2926 driver_dump->hdr.status = IPR_DUMP_STATUS_SUCCESS; 2927 driver_dump->hdr.os = IPR_DUMP_OS_LINUX; 2928 driver_dump->hdr.driver_name = IPR_DUMP_DRIVER_NAME; 2929 2930 ipr_dump_version_data(ioa_cfg, driver_dump); 2931 ipr_dump_location_data(ioa_cfg, driver_dump); 2932 ipr_dump_ioa_type_data(ioa_cfg, driver_dump); 2933 ipr_dump_trace_data(ioa_cfg, driver_dump); 2934 2935 /* Update dump_header */ 2936 driver_dump->hdr.len += sizeof(struct ipr_dump_entry_header); 2937 2938 /* IOA Dump entry */ 2939 ipr_init_dump_entry_hdr(&ioa_dump->hdr); 2940 ioa_dump->hdr.len = 0; 2941 ioa_dump->hdr.data_type = IPR_DUMP_DATA_TYPE_BINARY; 2942 ioa_dump->hdr.id = IPR_DUMP_IOA_DUMP_ID; 2943 2944 /* First entries in sdt are actually a list of dump addresses and 2945 lengths to gather the real dump data. sdt represents the pointer 2946 to the ioa generated dump table. Dump data will be extracted based 2947 on entries in this table */ 2948 sdt = &ioa_dump->sdt; 2949 2950 rc = ipr_get_ldump_data_section(ioa_cfg, start_addr, (__be32 *)sdt, 2951 sizeof(struct ipr_sdt) / sizeof(__be32)); 2952 2953 /* Smart Dump table is ready to use and the first entry is valid */ 2954 if (rc || ((be32_to_cpu(sdt->hdr.state) != IPR_FMT3_SDT_READY_TO_USE) && 2955 (be32_to_cpu(sdt->hdr.state) != IPR_FMT2_SDT_READY_TO_USE))) { 2956 dev_err(&ioa_cfg->pdev->dev, 2957 "Dump of IOA failed. Dump table not valid: %d, %X.\n", 2958 rc, be32_to_cpu(sdt->hdr.state)); 2959 driver_dump->hdr.status = IPR_DUMP_STATUS_FAILED; 2960 ioa_cfg->sdt_state = DUMP_OBTAINED; 2961 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 2962 return; 2963 } 2964 2965 num_entries = be32_to_cpu(sdt->hdr.num_entries_used); 2966 2967 if (num_entries > IPR_NUM_SDT_ENTRIES) 2968 num_entries = IPR_NUM_SDT_ENTRIES; 2969 2970 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 2971 2972 for (i = 0; i < num_entries; i++) { 2973 if (ioa_dump->hdr.len > IPR_MAX_IOA_DUMP_SIZE) { 2974 driver_dump->hdr.status = IPR_DUMP_STATUS_QUAL_SUCCESS; 2975 break; 2976 } 2977 2978 if (sdt->entry[i].flags & IPR_SDT_VALID_ENTRY) { 2979 sdt_word = be32_to_cpu(sdt->entry[i].start_token); 2980 if (ioa_cfg->sis64) 2981 bytes_to_copy = be32_to_cpu(sdt->entry[i].end_token); 2982 else { 2983 start_off = sdt_word & IPR_FMT2_MBX_ADDR_MASK; 2984 end_off = be32_to_cpu(sdt->entry[i].end_token); 2985 2986 if (ipr_sdt_is_fmt2(sdt_word) && sdt_word) 2987 bytes_to_copy = end_off - start_off; 2988 else 2989 valid = 0; 2990 } 2991 if (valid) { 2992 if (bytes_to_copy > IPR_MAX_IOA_DUMP_SIZE) { 2993 sdt->entry[i].flags &= ~IPR_SDT_VALID_ENTRY; 2994 continue; 2995 } 2996 2997 /* Copy data from adapter to driver buffers */ 2998 bytes_copied = ipr_sdt_copy(ioa_cfg, sdt_word, 2999 bytes_to_copy); 3000 3001 ioa_dump->hdr.len += bytes_copied; 3002 3003 if (bytes_copied != bytes_to_copy) { 3004 driver_dump->hdr.status = IPR_DUMP_STATUS_QUAL_SUCCESS; 3005 break; 3006 } 3007 } 3008 } 3009 } 3010 3011 dev_err(&ioa_cfg->pdev->dev, "Dump of IOA completed.\n"); 3012 3013 /* Update dump_header */ 3014 driver_dump->hdr.len += ioa_dump->hdr.len; 3015 wmb(); 3016 ioa_cfg->sdt_state = DUMP_OBTAINED; 3017 LEAVE; 3018} 3019 3020#else 3021#define ipr_get_ioa_dump(ioa_cfg, dump) do { } while(0) 3022#endif 3023 3024/** 3025 * ipr_release_dump - Free adapter dump memory 3026 * @kref: kref struct 3027 * 3028 * Return value: 3029 * nothing 3030 **/ 3031static void ipr_release_dump(struct kref *kref) 3032{ 3033 struct ipr_dump *dump = container_of(kref,struct ipr_dump,kref); 3034 struct ipr_ioa_cfg *ioa_cfg = dump->ioa_cfg; 3035 unsigned long lock_flags = 0; 3036 int i; 3037 3038 ENTER; 3039 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 3040 ioa_cfg->dump = NULL; 3041 ioa_cfg->sdt_state = INACTIVE; 3042 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3043 3044 for (i = 0; i < dump->ioa_dump.next_page_index; i++) 3045 free_page((unsigned long) dump->ioa_dump.ioa_data[i]); 3046 3047 kfree(dump); 3048 LEAVE; 3049} 3050 3051/** 3052 * ipr_worker_thread - Worker thread 3053 * @work: ioa config struct 3054 * 3055 * Called at task level from a work thread. This function takes care 3056 * of adding and removing device from the mid-layer as configuration 3057 * changes are detected by the adapter. 3058 * 3059 * Return value: 3060 * nothing 3061 **/ 3062static void ipr_worker_thread(struct work_struct *work) 3063{ 3064 unsigned long lock_flags; 3065 struct ipr_resource_entry *res; 3066 struct scsi_device *sdev; 3067 struct ipr_dump *dump; 3068 struct ipr_ioa_cfg *ioa_cfg = 3069 container_of(work, struct ipr_ioa_cfg, work_q); 3070 u8 bus, target, lun; 3071 int did_work; 3072 3073 ENTER; 3074 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 3075 3076 if (ioa_cfg->sdt_state == GET_DUMP) { 3077 dump = ioa_cfg->dump; 3078 if (!dump) { 3079 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3080 return; 3081 } 3082 kref_get(&dump->kref); 3083 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3084 ipr_get_ioa_dump(ioa_cfg, dump); 3085 kref_put(&dump->kref, ipr_release_dump); 3086 3087 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 3088 if (ioa_cfg->sdt_state == DUMP_OBTAINED) 3089 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE); 3090 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3091 return; 3092 } 3093 3094restart: 3095 do { 3096 did_work = 0; 3097 if (!ioa_cfg->allow_cmds || !ioa_cfg->allow_ml_add_del) { 3098 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3099 return; 3100 } 3101 3102 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) { 3103 if (res->del_from_ml && res->sdev) { 3104 did_work = 1; 3105 sdev = res->sdev; 3106 if (!scsi_device_get(sdev)) { 3107 list_move_tail(&res->queue, &ioa_cfg->free_res_q); 3108 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3109 scsi_remove_device(sdev); 3110 scsi_device_put(sdev); 3111 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 3112 } 3113 break; 3114 } 3115 } 3116 } while(did_work); 3117 3118 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) { 3119 if (res->add_to_ml) { 3120 bus = res->bus; 3121 target = res->target; 3122 lun = res->lun; 3123 res->add_to_ml = 0; 3124 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3125 scsi_add_device(ioa_cfg->host, bus, target, lun); 3126 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 3127 goto restart; 3128 } 3129 } 3130 3131 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3132 kobject_uevent(&ioa_cfg->host->shost_dev.kobj, KOBJ_CHANGE); 3133 LEAVE; 3134} 3135 3136#ifdef CONFIG_SCSI_IPR_TRACE 3137/** 3138 * ipr_read_trace - Dump the adapter trace 3139 * @filp: open sysfs file 3140 * @kobj: kobject struct 3141 * @bin_attr: bin_attribute struct 3142 * @buf: buffer 3143 * @off: offset 3144 * @count: buffer size 3145 * 3146 * Return value: 3147 * number of bytes printed to buffer 3148 **/ 3149static ssize_t ipr_read_trace(struct file *filp, struct kobject *kobj, 3150 struct bin_attribute *bin_attr, 3151 char *buf, loff_t off, size_t count) 3152{ 3153 struct device *dev = container_of(kobj, struct device, kobj); 3154 struct Scsi_Host *shost = class_to_shost(dev); 3155 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata; 3156 unsigned long lock_flags = 0; 3157 ssize_t ret; 3158 3159 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 3160 ret = memory_read_from_buffer(buf, count, &off, ioa_cfg->trace, 3161 IPR_TRACE_SIZE); 3162 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3163 3164 return ret; 3165} 3166 3167static struct bin_attribute ipr_trace_attr = { 3168 .attr = { 3169 .name = "trace", 3170 .mode = S_IRUGO, 3171 }, 3172 .size = 0, 3173 .read = ipr_read_trace, 3174}; 3175#endif 3176 3177/** 3178 * ipr_show_fw_version - Show the firmware version 3179 * @dev: class device struct 3180 * @buf: buffer 3181 * 3182 * Return value: 3183 * number of bytes printed to buffer 3184 **/ 3185static ssize_t ipr_show_fw_version(struct device *dev, 3186 struct device_attribute *attr, char *buf) 3187{ 3188 struct Scsi_Host *shost = class_to_shost(dev); 3189 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata; 3190 struct ipr_inquiry_page3 *ucode_vpd = &ioa_cfg->vpd_cbs->page3_data; 3191 unsigned long lock_flags = 0; 3192 int len; 3193 3194 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 3195 len = snprintf(buf, PAGE_SIZE, "%02X%02X%02X%02X\n", 3196 ucode_vpd->major_release, ucode_vpd->card_type, 3197 ucode_vpd->minor_release[0], 3198 ucode_vpd->minor_release[1]); 3199 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3200 return len; 3201} 3202 3203static struct device_attribute ipr_fw_version_attr = { 3204 .attr = { 3205 .name = "fw_version", 3206 .mode = S_IRUGO, 3207 }, 3208 .show = ipr_show_fw_version, 3209}; 3210 3211/** 3212 * ipr_show_log_level - Show the adapter's error logging level 3213 * @dev: class device struct 3214 * @buf: buffer 3215 * 3216 * Return value: 3217 * number of bytes printed to buffer 3218 **/ 3219static ssize_t ipr_show_log_level(struct device *dev, 3220 struct device_attribute *attr, char *buf) 3221{ 3222 struct Scsi_Host *shost = class_to_shost(dev); 3223 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata; 3224 unsigned long lock_flags = 0; 3225 int len; 3226 3227 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 3228 len = snprintf(buf, PAGE_SIZE, "%d\n", ioa_cfg->log_level); 3229 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3230 return len; 3231} 3232 3233/** 3234 * ipr_store_log_level - Change the adapter's error logging level 3235 * @dev: class device struct 3236 * @buf: buffer 3237 * 3238 * Return value: 3239 * number of bytes printed to buffer 3240 **/ 3241static ssize_t ipr_store_log_level(struct device *dev, 3242 struct device_attribute *attr, 3243 const char *buf, size_t count) 3244{ 3245 struct Scsi_Host *shost = class_to_shost(dev); 3246 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata; 3247 unsigned long lock_flags = 0; 3248 3249 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 3250 ioa_cfg->log_level = simple_strtoul(buf, NULL, 10); 3251 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3252 return strlen(buf); 3253} 3254 3255static struct device_attribute ipr_log_level_attr = { 3256 .attr = { 3257 .name = "log_level", 3258 .mode = S_IRUGO | S_IWUSR, 3259 }, 3260 .show = ipr_show_log_level, 3261 .store = ipr_store_log_level 3262}; 3263 3264/** 3265 * ipr_store_diagnostics - IOA Diagnostics interface 3266 * @dev: device struct 3267 * @buf: buffer 3268 * @count: buffer size 3269 * 3270 * This function will reset the adapter and wait a reasonable 3271 * amount of time for any errors that the adapter might log. 3272 * 3273 * Return value: 3274 * count on success / other on failure 3275 **/ 3276static ssize_t ipr_store_diagnostics(struct device *dev, 3277 struct device_attribute *attr, 3278 const char *buf, size_t count) 3279{ 3280 struct Scsi_Host *shost = class_to_shost(dev); 3281 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata; 3282 unsigned long lock_flags = 0; 3283 int rc = count; 3284 3285 if (!capable(CAP_SYS_ADMIN)) 3286 return -EACCES; 3287 3288 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 3289 while(ioa_cfg->in_reset_reload) { 3290 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3291 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload); 3292 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 3293 } 3294 3295 ioa_cfg->errors_logged = 0; 3296 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NORMAL); 3297 3298 if (ioa_cfg->in_reset_reload) { 3299 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3300 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload); 3301 3302 /* Wait for a second for any errors to be logged */ 3303 msleep(1000); 3304 } else { 3305 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3306 return -EIO; 3307 } 3308 3309 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 3310 if (ioa_cfg->in_reset_reload || ioa_cfg->errors_logged) 3311 rc = -EIO; 3312 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3313 3314 return rc; 3315} 3316 3317static struct device_attribute ipr_diagnostics_attr = { 3318 .attr = { 3319 .name = "run_diagnostics", 3320 .mode = S_IWUSR, 3321 }, 3322 .store = ipr_store_diagnostics 3323}; 3324 3325/** 3326 * ipr_show_adapter_state - Show the adapter's state 3327 * @class_dev: device struct 3328 * @buf: buffer 3329 * 3330 * Return value: 3331 * number of bytes printed to buffer 3332 **/ 3333static ssize_t ipr_show_adapter_state(struct device *dev, 3334 struct device_attribute *attr, char *buf) 3335{ 3336 struct Scsi_Host *shost = class_to_shost(dev); 3337 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata; 3338 unsigned long lock_flags = 0; 3339 int len; 3340 3341 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 3342 if (ioa_cfg->ioa_is_dead) 3343 len = snprintf(buf, PAGE_SIZE, "offline\n"); 3344 else 3345 len = snprintf(buf, PAGE_SIZE, "online\n"); 3346 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3347 return len; 3348} 3349 3350/** 3351 * ipr_store_adapter_state - Change adapter state 3352 * @dev: device struct 3353 * @buf: buffer 3354 * @count: buffer size 3355 * 3356 * This function will change the adapter's state. 3357 * 3358 * Return value: 3359 * count on success / other on failure 3360 **/ 3361static ssize_t ipr_store_adapter_state(struct device *dev, 3362 struct device_attribute *attr, 3363 const char *buf, size_t count) 3364{ 3365 struct Scsi_Host *shost = class_to_shost(dev); 3366 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata; 3367 unsigned long lock_flags; 3368 int result = count; 3369 3370 if (!capable(CAP_SYS_ADMIN)) 3371 return -EACCES; 3372 3373 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 3374 if (ioa_cfg->ioa_is_dead && !strncmp(buf, "online", 6)) { 3375 ioa_cfg->ioa_is_dead = 0; 3376 ioa_cfg->reset_retries = 0; 3377 ioa_cfg->in_ioa_bringdown = 0; 3378 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE); 3379 } 3380 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3381 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload); 3382 3383 return result; 3384} 3385 3386static struct device_attribute ipr_ioa_state_attr = { 3387 .attr = { 3388 .name = "online_state", 3389 .mode = S_IRUGO | S_IWUSR, 3390 }, 3391 .show = ipr_show_adapter_state, 3392 .store = ipr_store_adapter_state 3393}; 3394 3395/** 3396 * ipr_store_reset_adapter - Reset the adapter 3397 * @dev: device struct 3398 * @buf: buffer 3399 * @count: buffer size 3400 * 3401 * This function will reset the adapter. 3402 * 3403 * Return value: 3404 * count on success / other on failure 3405 **/ 3406static ssize_t ipr_store_reset_adapter(struct device *dev, 3407 struct device_attribute *attr, 3408 const char *buf, size_t count) 3409{ 3410 struct Scsi_Host *shost = class_to_shost(dev); 3411 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata; 3412 unsigned long lock_flags; 3413 int result = count; 3414 3415 if (!capable(CAP_SYS_ADMIN)) 3416 return -EACCES; 3417 3418 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 3419 if (!ioa_cfg->in_reset_reload) 3420 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NORMAL); 3421 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3422 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload); 3423 3424 return result; 3425} 3426 3427static struct device_attribute ipr_ioa_reset_attr = { 3428 .attr = { 3429 .name = "reset_host", 3430 .mode = S_IWUSR, 3431 }, 3432 .store = ipr_store_reset_adapter 3433}; 3434 3435/** 3436 * ipr_alloc_ucode_buffer - Allocates a microcode download buffer 3437 * @buf_len: buffer length 3438 * 3439 * Allocates a DMA'able buffer in chunks and assembles a scatter/gather 3440 * list to use for microcode download 3441 * 3442 * Return value: 3443 * pointer to sglist / NULL on failure 3444 **/ 3445static struct ipr_sglist *ipr_alloc_ucode_buffer(int buf_len) 3446{ 3447 int sg_size, order, bsize_elem, num_elem, i, j; 3448 struct ipr_sglist *sglist; 3449 struct scatterlist *scatterlist; 3450 struct page *page; 3451 3452 /* Get the minimum size per scatter/gather element */ 3453 sg_size = buf_len / (IPR_MAX_SGLIST - 1); 3454 3455 /* Get the actual size per element */ 3456 order = get_order(sg_size); 3457 3458 /* Determine the actual number of bytes per element */ 3459 bsize_elem = PAGE_SIZE * (1 << order); 3460 3461 /* Determine the actual number of sg entries needed */ 3462 if (buf_len % bsize_elem) 3463 num_elem = (buf_len / bsize_elem) + 1; 3464 else 3465 num_elem = buf_len / bsize_elem; 3466 3467 /* Allocate a scatter/gather list for the DMA */ 3468 sglist = kzalloc(sizeof(struct ipr_sglist) + 3469 (sizeof(struct scatterlist) * (num_elem - 1)), 3470 GFP_KERNEL); 3471 3472 if (sglist == NULL) { 3473 ipr_trace; 3474 return NULL; 3475 } 3476 3477 scatterlist = sglist->scatterlist; 3478 sg_init_table(scatterlist, num_elem); 3479 3480 sglist->order = order; 3481 sglist->num_sg = num_elem; 3482 3483 /* Allocate a bunch of sg elements */ 3484 for (i = 0; i < num_elem; i++) { 3485 page = alloc_pages(GFP_KERNEL, order); 3486 if (!page) { 3487 ipr_trace; 3488 3489 /* Free up what we already allocated */ 3490 for (j = i - 1; j >= 0; j--) 3491 __free_pages(sg_page(&scatterlist[j]), order); 3492 kfree(sglist); 3493 return NULL; 3494 } 3495 3496 sg_set_page(&scatterlist[i], page, 0, 0); 3497 } 3498 3499 return sglist; 3500} 3501 3502/** 3503 * ipr_free_ucode_buffer - Frees a microcode download buffer 3504 * @p_dnld: scatter/gather list pointer 3505 * 3506 * Free a DMA'able ucode download buffer previously allocated with 3507 * ipr_alloc_ucode_buffer 3508 * 3509 * Return value: 3510 * nothing 3511 **/ 3512static void ipr_free_ucode_buffer(struct ipr_sglist *sglist) 3513{ 3514 int i; 3515 3516 for (i = 0; i < sglist->num_sg; i++) 3517 __free_pages(sg_page(&sglist->scatterlist[i]), sglist->order); 3518 3519 kfree(sglist); 3520} 3521 3522/** 3523 * ipr_copy_ucode_buffer - Copy user buffer to kernel buffer 3524 * @sglist: scatter/gather list pointer 3525 * @buffer: buffer pointer 3526 * @len: buffer length 3527 * 3528 * Copy a microcode image from a user buffer into a buffer allocated by 3529 * ipr_alloc_ucode_buffer 3530 * 3531 * Return value: 3532 * 0 on success / other on failure 3533 **/ 3534static int ipr_copy_ucode_buffer(struct ipr_sglist *sglist, 3535 u8 *buffer, u32 len) 3536{ 3537 int bsize_elem, i, result = 0; 3538 struct scatterlist *scatterlist; 3539 void *kaddr; 3540 3541 /* Determine the actual number of bytes per element */ 3542 bsize_elem = PAGE_SIZE * (1 << sglist->order); 3543 3544 scatterlist = sglist->scatterlist; 3545 3546 for (i = 0; i < (len / bsize_elem); i++, buffer += bsize_elem) { 3547 struct page *page = sg_page(&scatterlist[i]); 3548 3549 kaddr = kmap(page); 3550 memcpy(kaddr, buffer, bsize_elem); 3551 kunmap(page); 3552 3553 scatterlist[i].length = bsize_elem; 3554 3555 if (result != 0) { 3556 ipr_trace; 3557 return result; 3558 } 3559 } 3560 3561 if (len % bsize_elem) { 3562 struct page *page = sg_page(&scatterlist[i]); 3563 3564 kaddr = kmap(page); 3565 memcpy(kaddr, buffer, len % bsize_elem); 3566 kunmap(page); 3567 3568 scatterlist[i].length = len % bsize_elem; 3569 } 3570 3571 sglist->buffer_len = len; 3572 return result; 3573} 3574 3575/** 3576 * ipr_build_ucode_ioadl64 - Build a microcode download IOADL 3577 * @ipr_cmd: ipr command struct 3578 * @sglist: scatter/gather list 3579 * 3580 * Builds a microcode download IOA data list (IOADL). 3581 * 3582 **/ 3583static void ipr_build_ucode_ioadl64(struct ipr_cmnd *ipr_cmd, 3584 struct ipr_sglist *sglist) 3585{ 3586 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb; 3587 struct ipr_ioadl64_desc *ioadl64 = ipr_cmd->i.ioadl64; 3588 struct scatterlist *scatterlist = sglist->scatterlist; 3589 int i; 3590 3591 ipr_cmd->dma_use_sg = sglist->num_dma_sg; 3592 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ; 3593 ioarcb->data_transfer_length = cpu_to_be32(sglist->buffer_len); 3594 3595 ioarcb->ioadl_len = 3596 cpu_to_be32(sizeof(struct ipr_ioadl64_desc) * ipr_cmd->dma_use_sg); 3597 for (i = 0; i < ipr_cmd->dma_use_sg; i++) { 3598 ioadl64[i].flags = cpu_to_be32(IPR_IOADL_FLAGS_WRITE); 3599 ioadl64[i].data_len = cpu_to_be32(sg_dma_len(&scatterlist[i])); 3600 ioadl64[i].address = cpu_to_be64(sg_dma_address(&scatterlist[i])); 3601 } 3602 3603 ioadl64[i-1].flags |= cpu_to_be32(IPR_IOADL_FLAGS_LAST); 3604} 3605 3606/** 3607 * ipr_build_ucode_ioadl - Build a microcode download IOADL 3608 * @ipr_cmd: ipr command struct 3609 * @sglist: scatter/gather list 3610 * 3611 * Builds a microcode download IOA data list (IOADL). 3612 * 3613 **/ 3614static void ipr_build_ucode_ioadl(struct ipr_cmnd *ipr_cmd, 3615 struct ipr_sglist *sglist) 3616{ 3617 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb; 3618 struct ipr_ioadl_desc *ioadl = ipr_cmd->i.ioadl; 3619 struct scatterlist *scatterlist = sglist->scatterlist; 3620 int i; 3621 3622 ipr_cmd->dma_use_sg = sglist->num_dma_sg; 3623 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ; 3624 ioarcb->data_transfer_length = cpu_to_be32(sglist->buffer_len); 3625 3626 ioarcb->ioadl_len = 3627 cpu_to_be32(sizeof(struct ipr_ioadl_desc) * ipr_cmd->dma_use_sg); 3628 3629 for (i = 0; i < ipr_cmd->dma_use_sg; i++) { 3630 ioadl[i].flags_and_data_len = 3631 cpu_to_be32(IPR_IOADL_FLAGS_WRITE | sg_dma_len(&scatterlist[i])); 3632 ioadl[i].address = 3633 cpu_to_be32(sg_dma_address(&scatterlist[i])); 3634 } 3635 3636 ioadl[i-1].flags_and_data_len |= 3637 cpu_to_be32(IPR_IOADL_FLAGS_LAST); 3638} 3639 3640/** 3641 * ipr_update_ioa_ucode - Update IOA's microcode 3642 * @ioa_cfg: ioa config struct 3643 * @sglist: scatter/gather list 3644 * 3645 * Initiate an adapter reset to update the IOA's microcode 3646 * 3647 * Return value: 3648 * 0 on success / -EIO on failure 3649 **/ 3650static int ipr_update_ioa_ucode(struct ipr_ioa_cfg *ioa_cfg, 3651 struct ipr_sglist *sglist) 3652{ 3653 unsigned long lock_flags; 3654 3655 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 3656 while(ioa_cfg->in_reset_reload) { 3657 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3658 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload); 3659 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 3660 } 3661 3662 if (ioa_cfg->ucode_sglist) { 3663 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3664 dev_err(&ioa_cfg->pdev->dev, 3665 "Microcode download already in progress\n"); 3666 return -EIO; 3667 } 3668 3669 sglist->num_dma_sg = pci_map_sg(ioa_cfg->pdev, sglist->scatterlist, 3670 sglist->num_sg, DMA_TO_DEVICE); 3671 3672 if (!sglist->num_dma_sg) { 3673 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3674 dev_err(&ioa_cfg->pdev->dev, 3675 "Failed to map microcode download buffer!\n"); 3676 return -EIO; 3677 } 3678 3679 ioa_cfg->ucode_sglist = sglist; 3680 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NORMAL); 3681 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3682 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload); 3683 3684 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 3685 ioa_cfg->ucode_sglist = NULL; 3686 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3687 return 0; 3688} 3689 3690/** 3691 * ipr_store_update_fw - Update the firmware on the adapter 3692 * @class_dev: device struct 3693 * @buf: buffer 3694 * @count: buffer size 3695 * 3696 * This function will update the firmware on the adapter. 3697 * 3698 * Return value: 3699 * count on success / other on failure 3700 **/ 3701static ssize_t ipr_store_update_fw(struct device *dev, 3702 struct device_attribute *attr, 3703 const char *buf, size_t count) 3704{ 3705 struct Scsi_Host *shost = class_to_shost(dev); 3706 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata; 3707 struct ipr_ucode_image_header *image_hdr; 3708 const struct firmware *fw_entry; 3709 struct ipr_sglist *sglist; 3710 char fname[100]; 3711 char *src; 3712 int len, result, dnld_size; 3713 3714 if (!capable(CAP_SYS_ADMIN)) 3715 return -EACCES; 3716 3717 len = snprintf(fname, 99, "%s", buf); 3718 fname[len-1] = '\0'; 3719 3720 if(request_firmware(&fw_entry, fname, &ioa_cfg->pdev->dev)) { 3721 dev_err(&ioa_cfg->pdev->dev, "Firmware file %s not found\n", fname); 3722 return -EIO; 3723 } 3724 3725 image_hdr = (struct ipr_ucode_image_header *)fw_entry->data; 3726 3727 if (be32_to_cpu(image_hdr->header_length) > fw_entry->size || 3728 (ioa_cfg->vpd_cbs->page3_data.card_type && 3729 ioa_cfg->vpd_cbs->page3_data.card_type != image_hdr->card_type)) { 3730 dev_err(&ioa_cfg->pdev->dev, "Invalid microcode buffer\n"); 3731 release_firmware(fw_entry); 3732 return -EINVAL; 3733 } 3734 3735 src = (u8 *)image_hdr + be32_to_cpu(image_hdr->header_length); 3736 dnld_size = fw_entry->size - be32_to_cpu(image_hdr->header_length); 3737 sglist = ipr_alloc_ucode_buffer(dnld_size); 3738 3739 if (!sglist) { 3740 dev_err(&ioa_cfg->pdev->dev, "Microcode buffer allocation failed\n"); 3741 release_firmware(fw_entry); 3742 return -ENOMEM; 3743 } 3744 3745 result = ipr_copy_ucode_buffer(sglist, src, dnld_size); 3746 3747 if (result) { 3748 dev_err(&ioa_cfg->pdev->dev, 3749 "Microcode buffer copy to DMA buffer failed\n"); 3750 goto out; 3751 } 3752 3753 result = ipr_update_ioa_ucode(ioa_cfg, sglist); 3754 3755 if (!result) 3756 result = count; 3757out: 3758 ipr_free_ucode_buffer(sglist); 3759 release_firmware(fw_entry); 3760 return result; 3761} 3762 3763static struct device_attribute ipr_update_fw_attr = { 3764 .attr = { 3765 .name = "update_fw", 3766 .mode = S_IWUSR, 3767 }, 3768 .store = ipr_store_update_fw 3769}; 3770 3771/** 3772 * ipr_show_fw_type - Show the adapter's firmware type. 3773 * @dev: class device struct 3774 * @buf: buffer 3775 * 3776 * Return value: 3777 * number of bytes printed to buffer 3778 **/ 3779static ssize_t ipr_show_fw_type(struct device *dev, 3780 struct device_attribute *attr, char *buf) 3781{ 3782 struct Scsi_Host *shost = class_to_shost(dev); 3783 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata; 3784 unsigned long lock_flags = 0; 3785 int len; 3786 3787 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 3788 len = snprintf(buf, PAGE_SIZE, "%d\n", ioa_cfg->sis64); 3789 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3790 return len; 3791} 3792 3793static struct device_attribute ipr_ioa_fw_type_attr = { 3794 .attr = { 3795 .name = "fw_type", 3796 .mode = S_IRUGO, 3797 }, 3798 .show = ipr_show_fw_type 3799}; 3800 3801static struct device_attribute *ipr_ioa_attrs[] = { 3802 &ipr_fw_version_attr, 3803 &ipr_log_level_attr, 3804 &ipr_diagnostics_attr, 3805 &ipr_ioa_state_attr, 3806 &ipr_ioa_reset_attr, 3807 &ipr_update_fw_attr, 3808 &ipr_ioa_fw_type_attr, 3809 NULL, 3810}; 3811 3812#ifdef CONFIG_SCSI_IPR_DUMP 3813/** 3814 * ipr_read_dump - Dump the adapter 3815 * @filp: open sysfs file 3816 * @kobj: kobject struct 3817 * @bin_attr: bin_attribute struct 3818 * @buf: buffer 3819 * @off: offset 3820 * @count: buffer size 3821 * 3822 * Return value: 3823 * number of bytes printed to buffer 3824 **/ 3825static ssize_t ipr_read_dump(struct file *filp, struct kobject *kobj, 3826 struct bin_attribute *bin_attr, 3827 char *buf, loff_t off, size_t count) 3828{ 3829 struct device *cdev = container_of(kobj, struct device, kobj); 3830 struct Scsi_Host *shost = class_to_shost(cdev); 3831 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata; 3832 struct ipr_dump *dump; 3833 unsigned long lock_flags = 0; 3834 char *src; 3835 int len; 3836 size_t rc = count; 3837 3838 if (!capable(CAP_SYS_ADMIN)) 3839 return -EACCES; 3840 3841 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 3842 dump = ioa_cfg->dump; 3843 3844 if (ioa_cfg->sdt_state != DUMP_OBTAINED || !dump) { 3845 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3846 return 0; 3847 } 3848 kref_get(&dump->kref); 3849 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3850 3851 if (off > dump->driver_dump.hdr.len) { 3852 kref_put(&dump->kref, ipr_release_dump); 3853 return 0; 3854 } 3855 3856 if (off + count > dump->driver_dump.hdr.len) { 3857 count = dump->driver_dump.hdr.len - off; 3858 rc = count; 3859 } 3860 3861 if (count && off < sizeof(dump->driver_dump)) { 3862 if (off + count > sizeof(dump->driver_dump)) 3863 len = sizeof(dump->driver_dump) - off; 3864 else 3865 len = count; 3866 src = (u8 *)&dump->driver_dump + off; 3867 memcpy(buf, src, len); 3868 buf += len; 3869 off += len; 3870 count -= len; 3871 } 3872 3873 off -= sizeof(dump->driver_dump); 3874 3875 if (count && off < offsetof(struct ipr_ioa_dump, ioa_data)) { 3876 if (off + count > offsetof(struct ipr_ioa_dump, ioa_data)) 3877 len = offsetof(struct ipr_ioa_dump, ioa_data) - off; 3878 else 3879 len = count; 3880 src = (u8 *)&dump->ioa_dump + off; 3881 memcpy(buf, src, len); 3882 buf += len; 3883 off += len; 3884 count -= len; 3885 } 3886 3887 off -= offsetof(struct ipr_ioa_dump, ioa_data); 3888 3889 while (count) { 3890 if ((off & PAGE_MASK) != ((off + count) & PAGE_MASK)) 3891 len = PAGE_ALIGN(off) - off; 3892 else 3893 len = count; 3894 src = (u8 *)dump->ioa_dump.ioa_data[(off & PAGE_MASK) >> PAGE_SHIFT]; 3895 src += off & ~PAGE_MASK; 3896 memcpy(buf, src, len); 3897 buf += len; 3898 off += len; 3899 count -= len; 3900 } 3901 3902 kref_put(&dump->kref, ipr_release_dump); 3903 return rc; 3904} 3905 3906/** 3907 * ipr_alloc_dump - Prepare for adapter dump 3908 * @ioa_cfg: ioa config struct 3909 * 3910 * Return value: 3911 * 0 on success / other on failure 3912 **/ 3913static int ipr_alloc_dump(struct ipr_ioa_cfg *ioa_cfg) 3914{ 3915 struct ipr_dump *dump; 3916 unsigned long lock_flags = 0; 3917 3918 dump = kzalloc(sizeof(struct ipr_dump), GFP_KERNEL); 3919 3920 if (!dump) { 3921 ipr_err("Dump memory allocation failed\n"); 3922 return -ENOMEM; 3923 } 3924 3925 kref_init(&dump->kref); 3926 dump->ioa_cfg = ioa_cfg; 3927 3928 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 3929 3930 if (INACTIVE != ioa_cfg->sdt_state) { 3931 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3932 kfree(dump); 3933 return 0; 3934 } 3935 3936 ioa_cfg->dump = dump; 3937 ioa_cfg->sdt_state = WAIT_FOR_DUMP; 3938 if (ioa_cfg->ioa_is_dead && !ioa_cfg->dump_taken) { 3939 ioa_cfg->dump_taken = 1; 3940 schedule_work(&ioa_cfg->work_q); 3941 } 3942 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3943 3944 return 0; 3945} 3946 3947/** 3948 * ipr_free_dump - Free adapter dump memory 3949 * @ioa_cfg: ioa config struct 3950 * 3951 * Return value: 3952 * 0 on success / other on failure 3953 **/ 3954static int ipr_free_dump(struct ipr_ioa_cfg *ioa_cfg) 3955{ 3956 struct ipr_dump *dump; 3957 unsigned long lock_flags = 0; 3958 3959 ENTER; 3960 3961 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 3962 dump = ioa_cfg->dump; 3963 if (!dump) { 3964 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3965 return 0; 3966 } 3967 3968 ioa_cfg->dump = NULL; 3969 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3970 3971 kref_put(&dump->kref, ipr_release_dump); 3972 3973 LEAVE; 3974 return 0; 3975} 3976 3977/** 3978 * ipr_write_dump - Setup dump state of adapter 3979 * @filp: open sysfs file 3980 * @kobj: kobject struct 3981 * @bin_attr: bin_attribute struct 3982 * @buf: buffer 3983 * @off: offset 3984 * @count: buffer size 3985 * 3986 * Return value: 3987 * number of bytes printed to buffer 3988 **/ 3989static ssize_t ipr_write_dump(struct file *filp, struct kobject *kobj, 3990 struct bin_attribute *bin_attr, 3991 char *buf, loff_t off, size_t count) 3992{ 3993 struct device *cdev = container_of(kobj, struct device, kobj); 3994 struct Scsi_Host *shost = class_to_shost(cdev); 3995 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata; 3996 int rc; 3997 3998 if (!capable(CAP_SYS_ADMIN)) 3999 return -EACCES; 4000 4001 if (buf[0] == '1') 4002 rc = ipr_alloc_dump(ioa_cfg); 4003 else if (buf[0] == '0') 4004 rc = ipr_free_dump(ioa_cfg); 4005 else 4006 return -EINVAL; 4007 4008 if (rc) 4009 return rc; 4010 else 4011 return count; 4012} 4013 4014static struct bin_attribute ipr_dump_attr = { 4015 .attr = { 4016 .name = "dump", 4017 .mode = S_IRUSR | S_IWUSR, 4018 }, 4019 .size = 0, 4020 .read = ipr_read_dump, 4021 .write = ipr_write_dump 4022}; 4023#else 4024static int ipr_free_dump(struct ipr_ioa_cfg *ioa_cfg) { return 0; }; 4025#endif 4026 4027/** 4028 * ipr_change_queue_depth - Change the device's queue depth 4029 * @sdev: scsi device struct 4030 * @qdepth: depth to set 4031 * @reason: calling context 4032 * 4033 * Return value: 4034 * actual depth set 4035 **/ 4036static int ipr_change_queue_depth(struct scsi_device *sdev, int qdepth, 4037 int reason) 4038{ 4039 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)sdev->host->hostdata; 4040 struct ipr_resource_entry *res; 4041 unsigned long lock_flags = 0; 4042 4043 if (reason != SCSI_QDEPTH_DEFAULT) 4044 return -EOPNOTSUPP; 4045 4046 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 4047 res = (struct ipr_resource_entry *)sdev->hostdata; 4048 4049 if (res && ipr_is_gata(res) && qdepth > IPR_MAX_CMD_PER_ATA_LUN) 4050 qdepth = IPR_MAX_CMD_PER_ATA_LUN; 4051 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 4052 4053 scsi_adjust_queue_depth(sdev, scsi_get_tag_type(sdev), qdepth); 4054 return sdev->queue_depth; 4055} 4056 4057/** 4058 * ipr_change_queue_type - Change the device's queue type 4059 * @dsev: scsi device struct 4060 * @tag_type: type of tags to use 4061 * 4062 * Return value: 4063 * actual queue type set 4064 **/ 4065static int ipr_change_queue_type(struct scsi_device *sdev, int tag_type) 4066{ 4067 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)sdev->host->hostdata; 4068 struct ipr_resource_entry *res; 4069 unsigned long lock_flags = 0; 4070 4071 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 4072 res = (struct ipr_resource_entry *)sdev->hostdata; 4073 4074 if (res) { 4075 if (ipr_is_gscsi(res) && sdev->tagged_supported) { 4076 /* 4077 * We don't bother quiescing the device here since the 4078 * adapter firmware does it for us. 4079 */ 4080 scsi_set_tag_type(sdev, tag_type); 4081 4082 if (tag_type) 4083 scsi_activate_tcq(sdev, sdev->queue_depth); 4084 else 4085 scsi_deactivate_tcq(sdev, sdev->queue_depth); 4086 } else 4087 tag_type = 0; 4088 } else 4089 tag_type = 0; 4090 4091 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 4092 return tag_type; 4093} 4094 4095/** 4096 * ipr_show_adapter_handle - Show the adapter's resource handle for this device 4097 * @dev: device struct 4098 * @attr: device attribute structure 4099 * @buf: buffer 4100 * 4101 * Return value: 4102 * number of bytes printed to buffer 4103 **/ 4104static ssize_t ipr_show_adapter_handle(struct device *dev, struct device_attribute *attr, char *buf) 4105{ 4106 struct scsi_device *sdev = to_scsi_device(dev); 4107 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)sdev->host->hostdata; 4108 struct ipr_resource_entry *res; 4109 unsigned long lock_flags = 0; 4110 ssize_t len = -ENXIO; 4111 4112 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 4113 res = (struct ipr_resource_entry *)sdev->hostdata; 4114 if (res) 4115 len = snprintf(buf, PAGE_SIZE, "%08X\n", res->res_handle); 4116 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 4117 return len; 4118} 4119 4120static struct device_attribute ipr_adapter_handle_attr = { 4121 .attr = { 4122 .name = "adapter_handle", 4123 .mode = S_IRUSR, 4124 }, 4125 .show = ipr_show_adapter_handle 4126}; 4127 4128/** 4129 * ipr_show_resource_path - Show the resource path or the resource address for 4130 * this device. 4131 * @dev: device struct 4132 * @attr: device attribute structure 4133 * @buf: buffer 4134 * 4135 * Return value: 4136 * number of bytes printed to buffer 4137 **/ 4138static ssize_t ipr_show_resource_path(struct device *dev, struct device_attribute *attr, char *buf) 4139{ 4140 struct scsi_device *sdev = to_scsi_device(dev); 4141 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)sdev->host->hostdata; 4142 struct ipr_resource_entry *res; 4143 unsigned long lock_flags = 0; 4144 ssize_t len = -ENXIO; 4145 char buffer[IPR_MAX_RES_PATH_LENGTH]; 4146 4147 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 4148 res = (struct ipr_resource_entry *)sdev->hostdata; 4149 if (res && ioa_cfg->sis64) 4150 len = snprintf(buf, PAGE_SIZE, "%s\n", 4151 ipr_format_res_path(res->res_path, buffer, 4152 sizeof(buffer))); 4153 else if (res) 4154 len = snprintf(buf, PAGE_SIZE, "%d:%d:%d:%d\n", ioa_cfg->host->host_no, 4155 res->bus, res->target, res->lun); 4156 4157 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 4158 return len; 4159} 4160 4161static struct device_attribute ipr_resource_path_attr = { 4162 .attr = { 4163 .name = "resource_path", 4164 .mode = S_IRUGO, 4165 }, 4166 .show = ipr_show_resource_path 4167}; 4168 4169/** 4170 * ipr_show_device_id - Show the device_id for this device. 4171 * @dev: device struct 4172 * @attr: device attribute structure 4173 * @buf: buffer 4174 * 4175 * Return value: 4176 * number of bytes printed to buffer 4177 **/ 4178static ssize_t ipr_show_device_id(struct device *dev, struct device_attribute *attr, char *buf) 4179{ 4180 struct scsi_device *sdev = to_scsi_device(dev); 4181 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)sdev->host->hostdata; 4182 struct ipr_resource_entry *res; 4183 unsigned long lock_flags = 0; 4184 ssize_t len = -ENXIO; 4185 4186 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 4187 res = (struct ipr_resource_entry *)sdev->hostdata; 4188 if (res && ioa_cfg->sis64) 4189 len = snprintf(buf, PAGE_SIZE, "0x%llx\n", res->dev_id); 4190 else if (res) 4191 len = snprintf(buf, PAGE_SIZE, "0x%llx\n", res->lun_wwn); 4192 4193 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 4194 return len; 4195} 4196 4197static struct device_attribute ipr_device_id_attr = { 4198 .attr = { 4199 .name = "device_id", 4200 .mode = S_IRUGO, 4201 }, 4202 .show = ipr_show_device_id 4203}; 4204 4205/** 4206 * ipr_show_resource_type - Show the resource type for this device. 4207 * @dev: device struct 4208 * @attr: device attribute structure 4209 * @buf: buffer 4210 * 4211 * Return value: 4212 * number of bytes printed to buffer 4213 **/ 4214static ssize_t ipr_show_resource_type(struct device *dev, struct device_attribute *attr, char *buf) 4215{ 4216 struct scsi_device *sdev = to_scsi_device(dev); 4217 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)sdev->host->hostdata; 4218 struct ipr_resource_entry *res; 4219 unsigned long lock_flags = 0; 4220 ssize_t len = -ENXIO; 4221 4222 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 4223 res = (struct ipr_resource_entry *)sdev->hostdata; 4224 4225 if (res) 4226 len = snprintf(buf, PAGE_SIZE, "%x\n", res->type); 4227 4228 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 4229 return len; 4230} 4231 4232static struct device_attribute ipr_resource_type_attr = { 4233 .attr = { 4234 .name = "resource_type", 4235 .mode = S_IRUGO, 4236 }, 4237 .show = ipr_show_resource_type 4238}; 4239 4240static struct device_attribute *ipr_dev_attrs[] = { 4241 &ipr_adapter_handle_attr, 4242 &ipr_resource_path_attr, 4243 &ipr_device_id_attr, 4244 &ipr_resource_type_attr, 4245 NULL, 4246}; 4247 4248/** 4249 * ipr_biosparam - Return the HSC mapping 4250 * @sdev: scsi device struct 4251 * @block_device: block device pointer 4252 * @capacity: capacity of the device 4253 * @parm: Array containing returned HSC values. 4254 * 4255 * This function generates the HSC parms that fdisk uses. 4256 * We want to make sure we return something that places partitions 4257 * on 4k boundaries for best performance with the IOA. 4258 * 4259 * Return value: 4260 * 0 on success 4261 **/ 4262static int ipr_biosparam(struct scsi_device *sdev, 4263 struct block_device *block_device, 4264 sector_t capacity, int *parm) 4265{ 4266 int heads, sectors; 4267 sector_t cylinders; 4268 4269 heads = 128; 4270 sectors = 32; 4271 4272 cylinders = capacity; 4273 sector_div(cylinders, (128 * 32)); 4274 4275 /* return result */ 4276 parm[0] = heads; 4277 parm[1] = sectors; 4278 parm[2] = cylinders; 4279 4280 return 0; 4281} 4282 4283/** 4284 * ipr_find_starget - Find target based on bus/target. 4285 * @starget: scsi target struct 4286 * 4287 * Return value: 4288 * resource entry pointer if found / NULL if not found 4289 **/ 4290static struct ipr_resource_entry *ipr_find_starget(struct scsi_target *starget) 4291{ 4292 struct Scsi_Host *shost = dev_to_shost(&starget->dev); 4293 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) shost->hostdata; 4294 struct ipr_resource_entry *res; 4295 4296 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) { 4297 if ((res->bus == starget->channel) && 4298 (res->target == starget->id) && 4299 (res->lun == 0)) { 4300 return res; 4301 } 4302 } 4303 4304 return NULL; 4305} 4306 4307static struct ata_port_info sata_port_info; 4308 4309/** 4310 * ipr_target_alloc - Prepare for commands to a SCSI target 4311 * @starget: scsi target struct 4312 * 4313 * If the device is a SATA device, this function allocates an 4314 * ATA port with libata, else it does nothing. 4315 * 4316 * Return value: 4317 * 0 on success / non-0 on failure 4318 **/ 4319static int ipr_target_alloc(struct scsi_target *starget) 4320{ 4321 struct Scsi_Host *shost = dev_to_shost(&starget->dev); 4322 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) shost->hostdata; 4323 struct ipr_sata_port *sata_port; 4324 struct ata_port *ap; 4325 struct ipr_resource_entry *res; 4326 unsigned long lock_flags; 4327 4328 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 4329 res = ipr_find_starget(starget); 4330 starget->hostdata = NULL; 4331 4332 if (res && ipr_is_gata(res)) { 4333 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 4334 sata_port = kzalloc(sizeof(*sata_port), GFP_KERNEL); 4335 if (!sata_port) 4336 return -ENOMEM; 4337 4338 ap = ata_sas_port_alloc(&ioa_cfg->ata_host, &sata_port_info, shost); 4339 if (ap) { 4340 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 4341 sata_port->ioa_cfg = ioa_cfg; 4342 sata_port->ap = ap; 4343 sata_port->res = res; 4344 4345 res->sata_port = sata_port; 4346 ap->private_data = sata_port; 4347 starget->hostdata = sata_port; 4348 } else { 4349 kfree(sata_port); 4350 return -ENOMEM; 4351 } 4352 } 4353 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 4354 4355 return 0; 4356} 4357 4358/** 4359 * ipr_target_destroy - Destroy a SCSI target 4360 * @starget: scsi target struct 4361 * 4362 * If the device was a SATA device, this function frees the libata 4363 * ATA port, else it does nothing. 4364 * 4365 **/ 4366static void ipr_target_destroy(struct scsi_target *starget) 4367{ 4368 struct ipr_sata_port *sata_port = starget->hostdata; 4369 struct Scsi_Host *shost = dev_to_shost(&starget->dev); 4370 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) shost->hostdata; 4371 4372 if (ioa_cfg->sis64) { 4373 if (starget->channel == IPR_ARRAY_VIRTUAL_BUS) 4374 clear_bit(starget->id, ioa_cfg->array_ids); 4375 else if (starget->channel == IPR_VSET_VIRTUAL_BUS) 4376 clear_bit(starget->id, ioa_cfg->vset_ids); 4377 else if (starget->channel == 0) 4378 clear_bit(starget->id, ioa_cfg->target_ids); 4379 } 4380 4381 if (sata_port) { 4382 starget->hostdata = NULL; 4383 ata_sas_port_destroy(sata_port->ap); 4384 kfree(sata_port); 4385 } 4386} 4387 4388/** 4389 * ipr_find_sdev - Find device based on bus/target/lun. 4390 * @sdev: scsi device struct 4391 * 4392 * Return value: 4393 * resource entry pointer if found / NULL if not found 4394 **/ 4395static struct ipr_resource_entry *ipr_find_sdev(struct scsi_device *sdev) 4396{ 4397 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) sdev->host->hostdata; 4398 struct ipr_resource_entry *res; 4399 4400 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) { 4401 if ((res->bus == sdev->channel) && 4402 (res->target == sdev->id) && 4403 (res->lun == sdev->lun)) 4404 return res; 4405 } 4406 4407 return NULL; 4408} 4409 4410/** 4411 * ipr_slave_destroy - Unconfigure a SCSI device 4412 * @sdev: scsi device struct 4413 * 4414 * Return value: 4415 * nothing 4416 **/ 4417static void ipr_slave_destroy(struct scsi_device *sdev) 4418{ 4419 struct ipr_resource_entry *res; 4420 struct ipr_ioa_cfg *ioa_cfg; 4421 unsigned long lock_flags = 0; 4422 4423 ioa_cfg = (struct ipr_ioa_cfg *) sdev->host->hostdata; 4424 4425 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 4426 res = (struct ipr_resource_entry *) sdev->hostdata; 4427 if (res) { 4428 if (res->sata_port) 4429 res->sata_port->ap->link.device[0].class = ATA_DEV_NONE; 4430 sdev->hostdata = NULL; 4431 res->sdev = NULL; 4432 res->sata_port = NULL; 4433 } 4434 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 4435} 4436 4437/** 4438 * ipr_slave_configure - Configure a SCSI device 4439 * @sdev: scsi device struct 4440 * 4441 * This function configures the specified scsi device. 4442 * 4443 * Return value: 4444 * 0 on success 4445 **/ 4446static int ipr_slave_configure(struct scsi_device *sdev) 4447{ 4448 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) sdev->host->hostdata; 4449 struct ipr_resource_entry *res; 4450 struct ata_port *ap = NULL; 4451 unsigned long lock_flags = 0; 4452 char buffer[IPR_MAX_RES_PATH_LENGTH]; 4453 4454 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 4455 res = sdev->hostdata; 4456 if (res) { 4457 if (ipr_is_af_dasd_device(res)) 4458 sdev->type = TYPE_RAID; 4459 if (ipr_is_af_dasd_device(res) || ipr_is_ioa_resource(res)) { 4460 sdev->scsi_level = 4; 4461 sdev->no_uld_attach = 1; 4462 } 4463 if (ipr_is_vset_device(res)) { 4464 blk_queue_rq_timeout(sdev->request_queue, 4465 IPR_VSET_RW_TIMEOUT); 4466 blk_queue_max_hw_sectors(sdev->request_queue, IPR_VSET_MAX_SECTORS); 4467 } 4468 if (ipr_is_gata(res) && res->sata_port) 4469 ap = res->sata_port->ap; 4470 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 4471 4472 if (ap) { 4473 scsi_adjust_queue_depth(sdev, 0, IPR_MAX_CMD_PER_ATA_LUN); 4474 ata_sas_slave_configure(sdev, ap); 4475 } else 4476 scsi_adjust_queue_depth(sdev, 0, sdev->host->cmd_per_lun); 4477 if (ioa_cfg->sis64) 4478 sdev_printk(KERN_INFO, sdev, "Resource path: %s\n", 4479 ipr_format_res_path(res->res_path, buffer, 4480 sizeof(buffer))); 4481 return 0; 4482 } 4483 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 4484 return 0; 4485} 4486 4487/** 4488 * ipr_ata_slave_alloc - Prepare for commands to a SATA device 4489 * @sdev: scsi device struct 4490 * 4491 * This function initializes an ATA port so that future commands 4492 * sent through queuecommand will work. 4493 * 4494 * Return value: 4495 * 0 on success 4496 **/ 4497static int ipr_ata_slave_alloc(struct scsi_device *sdev) 4498{ 4499 struct ipr_sata_port *sata_port = NULL; 4500 int rc = -ENXIO; 4501 4502 ENTER; 4503 if (sdev->sdev_target) 4504 sata_port = sdev->sdev_target->hostdata; 4505 if (sata_port) 4506 rc = ata_sas_port_init(sata_port->ap); 4507 if (rc) 4508 ipr_slave_destroy(sdev); 4509 4510 LEAVE; 4511 return rc; 4512} 4513 4514/** 4515 * ipr_slave_alloc - Prepare for commands to a device. 4516 * @sdev: scsi device struct 4517 * 4518 * This function saves a pointer to the resource entry 4519 * in the scsi device struct if the device exists. We 4520 * can then use this pointer in ipr_queuecommand when 4521 * handling new commands. 4522 * 4523 * Return value: 4524 * 0 on success / -ENXIO if device does not exist 4525 **/ 4526static int ipr_slave_alloc(struct scsi_device *sdev) 4527{ 4528 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) sdev->host->hostdata; 4529 struct ipr_resource_entry *res; 4530 unsigned long lock_flags; 4531 int rc = -ENXIO; 4532 4533 sdev->hostdata = NULL; 4534 4535 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 4536 4537 res = ipr_find_sdev(sdev); 4538 if (res) { 4539 res->sdev = sdev; 4540 res->add_to_ml = 0; 4541 res->in_erp = 0; 4542 sdev->hostdata = res; 4543 if (!ipr_is_naca_model(res)) 4544 res->needs_sync_complete = 1; 4545 rc = 0; 4546 if (ipr_is_gata(res)) { 4547 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 4548 return ipr_ata_slave_alloc(sdev); 4549 } 4550 } 4551 4552 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 4553 4554 return rc; 4555} 4556 4557/** 4558 * ipr_eh_host_reset - Reset the host adapter 4559 * @scsi_cmd: scsi command struct 4560 * 4561 * Return value: 4562 * SUCCESS / FAILED 4563 **/ 4564static int __ipr_eh_host_reset(struct scsi_cmnd * scsi_cmd) 4565{ 4566 struct ipr_ioa_cfg *ioa_cfg; 4567 int rc; 4568 4569 ENTER; 4570 ioa_cfg = (struct ipr_ioa_cfg *) scsi_cmd->device->host->hostdata; 4571 4572 dev_err(&ioa_cfg->pdev->dev, 4573 "Adapter being reset as a result of error recovery.\n"); 4574 4575 if (WAIT_FOR_DUMP == ioa_cfg->sdt_state) 4576 ioa_cfg->sdt_state = GET_DUMP; 4577 4578 rc = ipr_reset_reload(ioa_cfg, IPR_SHUTDOWN_ABBREV); 4579 4580 LEAVE; 4581 return rc; 4582} 4583 4584static int ipr_eh_host_reset(struct scsi_cmnd * cmd) 4585{ 4586 int rc; 4587 4588 spin_lock_irq(cmd->device->host->host_lock); 4589 rc = __ipr_eh_host_reset(cmd); 4590 spin_unlock_irq(cmd->device->host->host_lock); 4591 4592 return rc; 4593} 4594 4595/** 4596 * ipr_device_reset - Reset the device 4597 * @ioa_cfg: ioa config struct 4598 * @res: resource entry struct 4599 * 4600 * This function issues a device reset to the affected device. 4601 * If the device is a SCSI device, a LUN reset will be sent 4602 * to the device first. If that does not work, a target reset 4603 * will be sent. If the device is a SATA device, a PHY reset will 4604 * be sent. 4605 * 4606 * Return value: 4607 * 0 on success / non-zero on failure 4608 **/ 4609static int ipr_device_reset(struct ipr_ioa_cfg *ioa_cfg, 4610 struct ipr_resource_entry *res) 4611{ 4612 struct ipr_cmnd *ipr_cmd; 4613 struct ipr_ioarcb *ioarcb; 4614 struct ipr_cmd_pkt *cmd_pkt; 4615 struct ipr_ioarcb_ata_regs *regs; 4616 u32 ioasc; 4617 4618 ENTER; 4619 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg); 4620 ioarcb = &ipr_cmd->ioarcb; 4621 cmd_pkt = &ioarcb->cmd_pkt; 4622 4623 if (ipr_cmd->ioa_cfg->sis64) { 4624 regs = &ipr_cmd->i.ata_ioadl.regs; 4625 ioarcb->add_cmd_parms_offset = cpu_to_be16(sizeof(*ioarcb)); 4626 } else 4627 regs = &ioarcb->u.add_data.u.regs; 4628 4629 ioarcb->res_handle = res->res_handle; 4630 cmd_pkt->request_type = IPR_RQTYPE_IOACMD; 4631 cmd_pkt->cdb[0] = IPR_RESET_DEVICE; 4632 if (ipr_is_gata(res)) { 4633 cmd_pkt->cdb[2] = IPR_ATA_PHY_RESET; 4634 ioarcb->add_cmd_parms_len = cpu_to_be16(sizeof(regs->flags)); 4635 regs->flags |= IPR_ATA_FLAG_STATUS_ON_GOOD_COMPLETION; 4636 } 4637 4638 ipr_send_blocking_cmd(ipr_cmd, ipr_timeout, IPR_DEVICE_RESET_TIMEOUT); 4639 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc); 4640 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q); 4641 if (ipr_is_gata(res) && res->sata_port && ioasc != IPR_IOASC_IOA_WAS_RESET) { 4642 if (ipr_cmd->ioa_cfg->sis64) 4643 memcpy(&res->sata_port->ioasa, &ipr_cmd->s.ioasa64.u.gata, 4644 sizeof(struct ipr_ioasa_gata)); 4645 else 4646 memcpy(&res->sata_port->ioasa, &ipr_cmd->s.ioasa.u.gata, 4647 sizeof(struct ipr_ioasa_gata)); 4648 } 4649 4650 LEAVE; 4651 return (IPR_IOASC_SENSE_KEY(ioasc) ? -EIO : 0); 4652} 4653 4654/** 4655 * ipr_sata_reset - Reset the SATA port 4656 * @link: SATA link to reset 4657 * @classes: class of the attached device 4658 * 4659 * This function issues a SATA phy reset to the affected ATA link. 4660 * 4661 * Return value: 4662 * 0 on success / non-zero on failure 4663 **/ 4664static int ipr_sata_reset(struct ata_link *link, unsigned int *classes, 4665 unsigned long deadline) 4666{ 4667 struct ipr_sata_port *sata_port = link->ap->private_data; 4668 struct ipr_ioa_cfg *ioa_cfg = sata_port->ioa_cfg; 4669 struct ipr_resource_entry *res; 4670 unsigned long lock_flags = 0; 4671 int rc = -ENXIO; 4672 4673 ENTER; 4674 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 4675 while(ioa_cfg->in_reset_reload) { 4676 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 4677 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload); 4678 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 4679 } 4680 4681 res = sata_port->res; 4682 if (res) { 4683 rc = ipr_device_reset(ioa_cfg, res); 4684 *classes = res->ata_class; 4685 } 4686 4687 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 4688 LEAVE; 4689 return rc; 4690} 4691 4692/** 4693 * ipr_eh_dev_reset - Reset the device 4694 * @scsi_cmd: scsi command struct 4695 * 4696 * This function issues a device reset to the affected device. 4697 * A LUN reset will be sent to the device first. If that does 4698 * not work, a target reset will be sent. 4699 * 4700 * Return value: 4701 * SUCCESS / FAILED 4702 **/ 4703static int __ipr_eh_dev_reset(struct scsi_cmnd * scsi_cmd) 4704{ 4705 struct ipr_cmnd *ipr_cmd; 4706 struct ipr_ioa_cfg *ioa_cfg; 4707 struct ipr_resource_entry *res; 4708 struct ata_port *ap; 4709 int rc = 0; 4710 4711 ENTER; 4712 ioa_cfg = (struct ipr_ioa_cfg *) scsi_cmd->device->host->hostdata; 4713 res = scsi_cmd->device->hostdata; 4714 4715 if (!res) 4716 return FAILED; 4717 4718 /* 4719 * If we are currently going through reset/reload, return failed. This will force the 4720 * mid-layer to call ipr_eh_host_reset, which will then go to sleep and wait for the 4721 * reset to complete 4722 */ 4723 if (ioa_cfg->in_reset_reload) 4724 return FAILED; 4725 if (ioa_cfg->ioa_is_dead) 4726 return FAILED; 4727 4728 list_for_each_entry(ipr_cmd, &ioa_cfg->pending_q, queue) { 4729 if (ipr_cmd->ioarcb.res_handle == res->res_handle) { 4730 if (ipr_cmd->scsi_cmd) 4731 ipr_cmd->done = ipr_scsi_eh_done; 4732 if (ipr_cmd->qc) 4733 ipr_cmd->done = ipr_sata_eh_done; 4734 if (ipr_cmd->qc && !(ipr_cmd->qc->flags & ATA_QCFLAG_FAILED)) { 4735 ipr_cmd->qc->err_mask |= AC_ERR_TIMEOUT; 4736 ipr_cmd->qc->flags |= ATA_QCFLAG_FAILED; 4737 } 4738 } 4739 } 4740 4741 res->resetting_device = 1; 4742 scmd_printk(KERN_ERR, scsi_cmd, "Resetting device\n"); 4743 4744 if (ipr_is_gata(res) && res->sata_port) { 4745 ap = res->sata_port->ap; 4746 spin_unlock_irq(scsi_cmd->device->host->host_lock); 4747 ata_std_error_handler(ap); 4748 spin_lock_irq(scsi_cmd->device->host->host_lock); 4749 4750 list_for_each_entry(ipr_cmd, &ioa_cfg->pending_q, queue) { 4751 if (ipr_cmd->ioarcb.res_handle == res->res_handle) { 4752 rc = -EIO; 4753 break; 4754 } 4755 } 4756 } else 4757 rc = ipr_device_reset(ioa_cfg, res); 4758 res->resetting_device = 0; 4759 4760 LEAVE; 4761 return (rc ? FAILED : SUCCESS); 4762} 4763 4764static int ipr_eh_dev_reset(struct scsi_cmnd * cmd) 4765{ 4766 int rc; 4767 4768 spin_lock_irq(cmd->device->host->host_lock); 4769 rc = __ipr_eh_dev_reset(cmd); 4770 spin_unlock_irq(cmd->device->host->host_lock); 4771 4772 return rc; 4773} 4774 4775/** 4776 * ipr_bus_reset_done - Op done function for bus reset. 4777 * @ipr_cmd: ipr command struct 4778 * 4779 * This function is the op done function for a bus reset 4780 * 4781 * Return value: 4782 * none 4783 **/ 4784static void ipr_bus_reset_done(struct ipr_cmnd *ipr_cmd) 4785{ 4786 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 4787 struct ipr_resource_entry *res; 4788 4789 ENTER; 4790 if (!ioa_cfg->sis64) 4791 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) { 4792 if (res->res_handle == ipr_cmd->ioarcb.res_handle) { 4793 scsi_report_bus_reset(ioa_cfg->host, res->bus); 4794 break; 4795 } 4796 } 4797 4798 /* 4799 * If abort has not completed, indicate the reset has, else call the 4800 * abort's done function to wake the sleeping eh thread 4801 */ 4802 if (ipr_cmd->sibling->sibling) 4803 ipr_cmd->sibling->sibling = NULL; 4804 else 4805 ipr_cmd->sibling->done(ipr_cmd->sibling); 4806 4807 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q); 4808 LEAVE; 4809} 4810 4811/** 4812 * ipr_abort_timeout - An abort task has timed out 4813 * @ipr_cmd: ipr command struct 4814 * 4815 * This function handles when an abort task times out. If this 4816 * happens we issue a bus reset since we have resources tied 4817 * up that must be freed before returning to the midlayer. 4818 * 4819 * Return value: 4820 * none 4821 **/ 4822static void ipr_abort_timeout(struct ipr_cmnd *ipr_cmd) 4823{ 4824 struct ipr_cmnd *reset_cmd; 4825 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 4826 struct ipr_cmd_pkt *cmd_pkt; 4827 unsigned long lock_flags = 0; 4828 4829 ENTER; 4830 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 4831 if (ipr_cmd->completion.done || ioa_cfg->in_reset_reload) { 4832 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 4833 return; 4834 } 4835 4836 sdev_printk(KERN_ERR, ipr_cmd->u.sdev, "Abort timed out. Resetting bus.\n"); 4837 reset_cmd = ipr_get_free_ipr_cmnd(ioa_cfg); 4838 ipr_cmd->sibling = reset_cmd; 4839 reset_cmd->sibling = ipr_cmd; 4840 reset_cmd->ioarcb.res_handle = ipr_cmd->ioarcb.res_handle; 4841 cmd_pkt = &reset_cmd->ioarcb.cmd_pkt; 4842 cmd_pkt->request_type = IPR_RQTYPE_IOACMD; 4843 cmd_pkt->cdb[0] = IPR_RESET_DEVICE; 4844 cmd_pkt->cdb[2] = IPR_RESET_TYPE_SELECT | IPR_BUS_RESET; 4845 4846 ipr_do_req(reset_cmd, ipr_bus_reset_done, ipr_timeout, IPR_DEVICE_RESET_TIMEOUT); 4847 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 4848 LEAVE; 4849} 4850 4851/** 4852 * ipr_cancel_op - Cancel specified op 4853 * @scsi_cmd: scsi command struct 4854 * 4855 * This function cancels specified op. 4856 * 4857 * Return value: 4858 * SUCCESS / FAILED 4859 **/ 4860static int ipr_cancel_op(struct scsi_cmnd * scsi_cmd) 4861{ 4862 struct ipr_cmnd *ipr_cmd; 4863 struct ipr_ioa_cfg *ioa_cfg; 4864 struct ipr_resource_entry *res; 4865 struct ipr_cmd_pkt *cmd_pkt; 4866 u32 ioasc; 4867 int op_found = 0; 4868 4869 ENTER; 4870 ioa_cfg = (struct ipr_ioa_cfg *)scsi_cmd->device->host->hostdata; 4871 res = scsi_cmd->device->hostdata; 4872 4873 /* If we are currently going through reset/reload, return failed. 4874 * This will force the mid-layer to call ipr_eh_host_reset, 4875 * which will then go to sleep and wait for the reset to complete 4876 */ 4877 if (ioa_cfg->in_reset_reload || ioa_cfg->ioa_is_dead) 4878 return FAILED; 4879 if (!res || !ipr_is_gscsi(res)) 4880 return FAILED; 4881 4882 list_for_each_entry(ipr_cmd, &ioa_cfg->pending_q, queue) { 4883 if (ipr_cmd->scsi_cmd == scsi_cmd) { 4884 ipr_cmd->done = ipr_scsi_eh_done; 4885 op_found = 1; 4886 break; 4887 } 4888 } 4889 4890 if (!op_found) 4891 return SUCCESS; 4892 4893 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg); 4894 ipr_cmd->ioarcb.res_handle = res->res_handle; 4895 cmd_pkt = &ipr_cmd->ioarcb.cmd_pkt; 4896 cmd_pkt->request_type = IPR_RQTYPE_IOACMD; 4897 cmd_pkt->cdb[0] = IPR_CANCEL_ALL_REQUESTS; 4898 ipr_cmd->u.sdev = scsi_cmd->device; 4899 4900 scmd_printk(KERN_ERR, scsi_cmd, "Aborting command: %02X\n", 4901 scsi_cmd->cmnd[0]); 4902 ipr_send_blocking_cmd(ipr_cmd, ipr_abort_timeout, IPR_CANCEL_ALL_TIMEOUT); 4903 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc); 4904 4905 /* 4906 * If the abort task timed out and we sent a bus reset, we will get 4907 * one the following responses to the abort 4908 */ 4909 if (ioasc == IPR_IOASC_BUS_WAS_RESET || ioasc == IPR_IOASC_SYNC_REQUIRED) { 4910 ioasc = 0; 4911 ipr_trace; 4912 } 4913 4914 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q); 4915 if (!ipr_is_naca_model(res)) 4916 res->needs_sync_complete = 1; 4917 4918 LEAVE; 4919 return (IPR_IOASC_SENSE_KEY(ioasc) ? FAILED : SUCCESS); 4920} 4921 4922/** 4923 * ipr_eh_abort - Abort a single op 4924 * @scsi_cmd: scsi command struct 4925 * 4926 * Return value: 4927 * SUCCESS / FAILED 4928 **/ 4929static int ipr_eh_abort(struct scsi_cmnd * scsi_cmd) 4930{ 4931 unsigned long flags; 4932 int rc; 4933 4934 ENTER; 4935 4936 spin_lock_irqsave(scsi_cmd->device->host->host_lock, flags); 4937 rc = ipr_cancel_op(scsi_cmd); 4938 spin_unlock_irqrestore(scsi_cmd->device->host->host_lock, flags); 4939 4940 LEAVE; 4941 return rc; 4942} 4943 4944/** 4945 * ipr_handle_other_interrupt - Handle "other" interrupts 4946 * @ioa_cfg: ioa config struct 4947 * @int_reg: interrupt register 4948 * 4949 * Return value: 4950 * IRQ_NONE / IRQ_HANDLED 4951 **/ 4952static irqreturn_t ipr_handle_other_interrupt(struct ipr_ioa_cfg *ioa_cfg, 4953 volatile u32 int_reg) 4954{ 4955 irqreturn_t rc = IRQ_HANDLED; 4956 4957 if (int_reg & IPR_PCII_IOA_TRANS_TO_OPER) { 4958 /* Mask the interrupt */ 4959 writel(IPR_PCII_IOA_TRANS_TO_OPER, ioa_cfg->regs.set_interrupt_mask_reg); 4960 4961 /* Clear the interrupt */ 4962 writel(IPR_PCII_IOA_TRANS_TO_OPER, ioa_cfg->regs.clr_interrupt_reg); 4963 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg); 4964 4965 list_del(&ioa_cfg->reset_cmd->queue); 4966 del_timer(&ioa_cfg->reset_cmd->timer); 4967 ipr_reset_ioa_job(ioa_cfg->reset_cmd); 4968 } else { 4969 if (int_reg & IPR_PCII_IOA_UNIT_CHECKED) 4970 ioa_cfg->ioa_unit_checked = 1; 4971 else 4972 dev_err(&ioa_cfg->pdev->dev, 4973 "Permanent IOA failure. 0x%08X\n", int_reg); 4974 4975 if (WAIT_FOR_DUMP == ioa_cfg->sdt_state) 4976 ioa_cfg->sdt_state = GET_DUMP; 4977 4978 ipr_mask_and_clear_interrupts(ioa_cfg, ~0); 4979 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE); 4980 } 4981 4982 return rc; 4983} 4984 4985/** 4986 * ipr_isr_eh - Interrupt service routine error handler 4987 * @ioa_cfg: ioa config struct 4988 * @msg: message to log 4989 * 4990 * Return value: 4991 * none 4992 **/ 4993static void ipr_isr_eh(struct ipr_ioa_cfg *ioa_cfg, char *msg) 4994{ 4995 ioa_cfg->errors_logged++; 4996 dev_err(&ioa_cfg->pdev->dev, "%s\n", msg); 4997 4998 if (WAIT_FOR_DUMP == ioa_cfg->sdt_state) 4999 ioa_cfg->sdt_state = GET_DUMP; 5000 5001 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE); 5002} 5003 5004/** 5005 * ipr_isr - Interrupt service routine 5006 * @irq: irq number 5007 * @devp: pointer to ioa config struct 5008 * 5009 * Return value: 5010 * IRQ_NONE / IRQ_HANDLED 5011 **/ 5012static irqreturn_t ipr_isr(int irq, void *devp) 5013{ 5014 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)devp; 5015 unsigned long lock_flags = 0; 5016 volatile u32 int_reg, int_mask_reg; 5017 u32 ioasc; 5018 u16 cmd_index; 5019 int num_hrrq = 0; 5020 struct ipr_cmnd *ipr_cmd; 5021 irqreturn_t rc = IRQ_NONE; 5022 5023 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 5024 5025 /* If interrupts are disabled, ignore the interrupt */ 5026 if (!ioa_cfg->allow_interrupts) { 5027 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 5028 return IRQ_NONE; 5029 } 5030 5031 int_mask_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg32); 5032 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg32) & ~int_mask_reg; 5033 5034 /* If an interrupt on the adapter did not occur, ignore it. 5035 * Or in the case of SIS 64, check for a stage change interrupt. 5036 */ 5037 if (unlikely((int_reg & IPR_PCII_OPER_INTERRUPTS) == 0)) { 5038 if (ioa_cfg->sis64) { 5039 int_mask_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg); 5040 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg) & ~int_mask_reg; 5041 if (int_reg & IPR_PCII_IPL_STAGE_CHANGE) { 5042 5043 /* clear stage change */ 5044 writel(IPR_PCII_IPL_STAGE_CHANGE, ioa_cfg->regs.clr_interrupt_reg); 5045 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg) & ~int_mask_reg; 5046 list_del(&ioa_cfg->reset_cmd->queue); 5047 del_timer(&ioa_cfg->reset_cmd->timer); 5048 ipr_reset_ioa_job(ioa_cfg->reset_cmd); 5049 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 5050 return IRQ_HANDLED; 5051 } 5052 } 5053 5054 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 5055 return IRQ_NONE; 5056 } 5057 5058 while (1) { 5059 ipr_cmd = NULL; 5060 5061 while ((be32_to_cpu(*ioa_cfg->hrrq_curr) & IPR_HRRQ_TOGGLE_BIT) == 5062 ioa_cfg->toggle_bit) { 5063 5064 cmd_index = (be32_to_cpu(*ioa_cfg->hrrq_curr) & 5065 IPR_HRRQ_REQ_RESP_HANDLE_MASK) >> IPR_HRRQ_REQ_RESP_HANDLE_SHIFT; 5066 5067 if (unlikely(cmd_index >= IPR_NUM_CMD_BLKS)) { 5068 ipr_isr_eh(ioa_cfg, "Invalid response handle from IOA"); 5069 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 5070 return IRQ_HANDLED; 5071 } 5072 5073 ipr_cmd = ioa_cfg->ipr_cmnd_list[cmd_index]; 5074 5075 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc); 5076 5077 ipr_trc_hook(ipr_cmd, IPR_TRACE_FINISH, ioasc); 5078 5079 list_del(&ipr_cmd->queue); 5080 del_timer(&ipr_cmd->timer); 5081 ipr_cmd->done(ipr_cmd); 5082 5083 rc = IRQ_HANDLED; 5084 5085 if (ioa_cfg->hrrq_curr < ioa_cfg->hrrq_end) { 5086 ioa_cfg->hrrq_curr++; 5087 } else { 5088 ioa_cfg->hrrq_curr = ioa_cfg->hrrq_start; 5089 ioa_cfg->toggle_bit ^= 1u; 5090 } 5091 } 5092 5093 if (ipr_cmd != NULL) { 5094 /* Clear the PCI interrupt */ 5095 do { 5096 writel(IPR_PCII_HRRQ_UPDATED, ioa_cfg->regs.clr_interrupt_reg32); 5097 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg32) & ~int_mask_reg; 5098 } while (int_reg & IPR_PCII_HRRQ_UPDATED && 5099 num_hrrq++ < IPR_MAX_HRRQ_RETRIES); 5100 5101 if (int_reg & IPR_PCII_HRRQ_UPDATED) { 5102 ipr_isr_eh(ioa_cfg, "Error clearing HRRQ"); 5103 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 5104 return IRQ_HANDLED; 5105 } 5106 5107 } else 5108 break; 5109 } 5110 5111 if (unlikely(rc == IRQ_NONE)) 5112 rc = ipr_handle_other_interrupt(ioa_cfg, int_reg); 5113 5114 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 5115 return rc; 5116} 5117 5118/** 5119 * ipr_build_ioadl64 - Build a scatter/gather list and map the buffer 5120 * @ioa_cfg: ioa config struct 5121 * @ipr_cmd: ipr command struct 5122 * 5123 * Return value: 5124 * 0 on success / -1 on failure 5125 **/ 5126static int ipr_build_ioadl64(struct ipr_ioa_cfg *ioa_cfg, 5127 struct ipr_cmnd *ipr_cmd) 5128{ 5129 int i, nseg; 5130 struct scatterlist *sg; 5131 u32 length; 5132 u32 ioadl_flags = 0; 5133 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd; 5134 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb; 5135 struct ipr_ioadl64_desc *ioadl64 = ipr_cmd->i.ioadl64; 5136 5137 length = scsi_bufflen(scsi_cmd); 5138 if (!length) 5139 return 0; 5140 5141 nseg = scsi_dma_map(scsi_cmd); 5142 if (nseg < 0) { 5143 dev_err(&ioa_cfg->pdev->dev, "pci_map_sg failed!\n"); 5144 return -1; 5145 } 5146 5147 ipr_cmd->dma_use_sg = nseg; 5148 5149 ioarcb->data_transfer_length = cpu_to_be32(length); 5150 ioarcb->ioadl_len = 5151 cpu_to_be32(sizeof(struct ipr_ioadl64_desc) * ipr_cmd->dma_use_sg); 5152 5153 if (scsi_cmd->sc_data_direction == DMA_TO_DEVICE) { 5154 ioadl_flags = IPR_IOADL_FLAGS_WRITE; 5155 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ; 5156 } else if (scsi_cmd->sc_data_direction == DMA_FROM_DEVICE) 5157 ioadl_flags = IPR_IOADL_FLAGS_READ; 5158 5159 scsi_for_each_sg(scsi_cmd, sg, ipr_cmd->dma_use_sg, i) { 5160 ioadl64[i].flags = cpu_to_be32(ioadl_flags); 5161 ioadl64[i].data_len = cpu_to_be32(sg_dma_len(sg)); 5162 ioadl64[i].address = cpu_to_be64(sg_dma_address(sg)); 5163 } 5164 5165 ioadl64[i-1].flags |= cpu_to_be32(IPR_IOADL_FLAGS_LAST); 5166 return 0; 5167} 5168 5169/** 5170 * ipr_build_ioadl - Build a scatter/gather list and map the buffer 5171 * @ioa_cfg: ioa config struct 5172 * @ipr_cmd: ipr command struct 5173 * 5174 * Return value: 5175 * 0 on success / -1 on failure 5176 **/ 5177static int ipr_build_ioadl(struct ipr_ioa_cfg *ioa_cfg, 5178 struct ipr_cmnd *ipr_cmd) 5179{ 5180 int i, nseg; 5181 struct scatterlist *sg; 5182 u32 length; 5183 u32 ioadl_flags = 0; 5184 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd; 5185 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb; 5186 struct ipr_ioadl_desc *ioadl = ipr_cmd->i.ioadl; 5187 5188 length = scsi_bufflen(scsi_cmd); 5189 if (!length) 5190 return 0; 5191 5192 nseg = scsi_dma_map(scsi_cmd); 5193 if (nseg < 0) { 5194 dev_err(&ioa_cfg->pdev->dev, "pci_map_sg failed!\n"); 5195 return -1; 5196 } 5197 5198 ipr_cmd->dma_use_sg = nseg; 5199 5200 if (scsi_cmd->sc_data_direction == DMA_TO_DEVICE) { 5201 ioadl_flags = IPR_IOADL_FLAGS_WRITE; 5202 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ; 5203 ioarcb->data_transfer_length = cpu_to_be32(length); 5204 ioarcb->ioadl_len = 5205 cpu_to_be32(sizeof(struct ipr_ioadl_desc) * ipr_cmd->dma_use_sg); 5206 } else if (scsi_cmd->sc_data_direction == DMA_FROM_DEVICE) { 5207 ioadl_flags = IPR_IOADL_FLAGS_READ; 5208 ioarcb->read_data_transfer_length = cpu_to_be32(length); 5209 ioarcb->read_ioadl_len = 5210 cpu_to_be32(sizeof(struct ipr_ioadl_desc) * ipr_cmd->dma_use_sg); 5211 } 5212 5213 if (ipr_cmd->dma_use_sg <= ARRAY_SIZE(ioarcb->u.add_data.u.ioadl)) { 5214 ioadl = ioarcb->u.add_data.u.ioadl; 5215 ioarcb->write_ioadl_addr = cpu_to_be32((ipr_cmd->dma_addr) + 5216 offsetof(struct ipr_ioarcb, u.add_data)); 5217 ioarcb->read_ioadl_addr = ioarcb->write_ioadl_addr; 5218 } 5219 5220 scsi_for_each_sg(scsi_cmd, sg, ipr_cmd->dma_use_sg, i) { 5221 ioadl[i].flags_and_data_len = 5222 cpu_to_be32(ioadl_flags | sg_dma_len(sg)); 5223 ioadl[i].address = cpu_to_be32(sg_dma_address(sg)); 5224 } 5225 5226 ioadl[i-1].flags_and_data_len |= cpu_to_be32(IPR_IOADL_FLAGS_LAST); 5227 return 0; 5228} 5229 5230/** 5231 * ipr_get_task_attributes - Translate SPI Q-Tag to task attributes 5232 * @scsi_cmd: scsi command struct 5233 * 5234 * Return value: 5235 * task attributes 5236 **/ 5237static u8 ipr_get_task_attributes(struct scsi_cmnd *scsi_cmd) 5238{ 5239 u8 tag[2]; 5240 u8 rc = IPR_FLAGS_LO_UNTAGGED_TASK; 5241 5242 if (scsi_populate_tag_msg(scsi_cmd, tag)) { 5243 switch (tag[0]) { 5244 case MSG_SIMPLE_TAG: 5245 rc = IPR_FLAGS_LO_SIMPLE_TASK; 5246 break; 5247 case MSG_HEAD_TAG: 5248 rc = IPR_FLAGS_LO_HEAD_OF_Q_TASK; 5249 break; 5250 case MSG_ORDERED_TAG: 5251 rc = IPR_FLAGS_LO_ORDERED_TASK; 5252 break; 5253 }; 5254 } 5255 5256 return rc; 5257} 5258 5259/** 5260 * ipr_erp_done - Process completion of ERP for a device 5261 * @ipr_cmd: ipr command struct 5262 * 5263 * This function copies the sense buffer into the scsi_cmd 5264 * struct and pushes the scsi_done function. 5265 * 5266 * Return value: 5267 * nothing 5268 **/ 5269static void ipr_erp_done(struct ipr_cmnd *ipr_cmd) 5270{ 5271 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd; 5272 struct ipr_resource_entry *res = scsi_cmd->device->hostdata; 5273 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 5274 u32 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc); 5275 5276 if (IPR_IOASC_SENSE_KEY(ioasc) > 0) { 5277 scsi_cmd->result |= (DID_ERROR << 16); 5278 scmd_printk(KERN_ERR, scsi_cmd, 5279 "Request Sense failed with IOASC: 0x%08X\n", ioasc); 5280 } else { 5281 memcpy(scsi_cmd->sense_buffer, ipr_cmd->sense_buffer, 5282 SCSI_SENSE_BUFFERSIZE); 5283 } 5284 5285 if (res) { 5286 if (!ipr_is_naca_model(res)) 5287 res->needs_sync_complete = 1; 5288 res->in_erp = 0; 5289 } 5290 scsi_dma_unmap(ipr_cmd->scsi_cmd); 5291 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q); 5292 scsi_cmd->scsi_done(scsi_cmd); 5293} 5294 5295/** 5296 * ipr_reinit_ipr_cmnd_for_erp - Re-initialize a cmnd block to be used for ERP 5297 * @ipr_cmd: ipr command struct 5298 * 5299 * Return value: 5300 * none 5301 **/ 5302static void ipr_reinit_ipr_cmnd_for_erp(struct ipr_cmnd *ipr_cmd) 5303{ 5304 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb; 5305 struct ipr_ioasa *ioasa = &ipr_cmd->s.ioasa; 5306 dma_addr_t dma_addr = ipr_cmd->dma_addr; 5307 5308 memset(&ioarcb->cmd_pkt, 0, sizeof(struct ipr_cmd_pkt)); 5309 ioarcb->data_transfer_length = 0; 5310 ioarcb->read_data_transfer_length = 0; 5311 ioarcb->ioadl_len = 0; 5312 ioarcb->read_ioadl_len = 0; 5313 ioasa->hdr.ioasc = 0; 5314 ioasa->hdr.residual_data_len = 0; 5315 5316 if (ipr_cmd->ioa_cfg->sis64) 5317 ioarcb->u.sis64_addr_data.data_ioadl_addr = 5318 cpu_to_be64(dma_addr + offsetof(struct ipr_cmnd, i.ioadl64)); 5319 else { 5320 ioarcb->write_ioadl_addr = 5321 cpu_to_be32(dma_addr + offsetof(struct ipr_cmnd, i.ioadl)); 5322 ioarcb->read_ioadl_addr = ioarcb->write_ioadl_addr; 5323 } 5324} 5325 5326/** 5327 * ipr_erp_request_sense - Send request sense to a device 5328 * @ipr_cmd: ipr command struct 5329 * 5330 * This function sends a request sense to a device as a result 5331 * of a check condition. 5332 * 5333 * Return value: 5334 * nothing 5335 **/ 5336static void ipr_erp_request_sense(struct ipr_cmnd *ipr_cmd) 5337{ 5338 struct ipr_cmd_pkt *cmd_pkt = &ipr_cmd->ioarcb.cmd_pkt; 5339 u32 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc); 5340 5341 if (IPR_IOASC_SENSE_KEY(ioasc) > 0) { 5342 ipr_erp_done(ipr_cmd); 5343 return; 5344 } 5345 5346 ipr_reinit_ipr_cmnd_for_erp(ipr_cmd); 5347 5348 cmd_pkt->request_type = IPR_RQTYPE_SCSICDB; 5349 cmd_pkt->cdb[0] = REQUEST_SENSE; 5350 cmd_pkt->cdb[4] = SCSI_SENSE_BUFFERSIZE; 5351 cmd_pkt->flags_hi |= IPR_FLAGS_HI_SYNC_OVERRIDE; 5352 cmd_pkt->flags_hi |= IPR_FLAGS_HI_NO_ULEN_CHK; 5353 cmd_pkt->timeout = cpu_to_be16(IPR_REQUEST_SENSE_TIMEOUT / HZ); 5354 5355 ipr_init_ioadl(ipr_cmd, ipr_cmd->sense_buffer_dma, 5356 SCSI_SENSE_BUFFERSIZE, IPR_IOADL_FLAGS_READ_LAST); 5357 5358 ipr_do_req(ipr_cmd, ipr_erp_done, ipr_timeout, 5359 IPR_REQUEST_SENSE_TIMEOUT * 2); 5360} 5361 5362/** 5363 * ipr_erp_cancel_all - Send cancel all to a device 5364 * @ipr_cmd: ipr command struct 5365 * 5366 * This function sends a cancel all to a device to clear the 5367 * queue. If we are running TCQ on the device, QERR is set to 1, 5368 * which means all outstanding ops have been dropped on the floor. 5369 * Cancel all will return them to us. 5370 * 5371 * Return value: 5372 * nothing 5373 **/ 5374static void ipr_erp_cancel_all(struct ipr_cmnd *ipr_cmd) 5375{ 5376 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd; 5377 struct ipr_resource_entry *res = scsi_cmd->device->hostdata; 5378 struct ipr_cmd_pkt *cmd_pkt; 5379 5380 res->in_erp = 1; 5381 5382 ipr_reinit_ipr_cmnd_for_erp(ipr_cmd); 5383 5384 if (!scsi_get_tag_type(scsi_cmd->device)) { 5385 ipr_erp_request_sense(ipr_cmd); 5386 return; 5387 } 5388 5389 cmd_pkt = &ipr_cmd->ioarcb.cmd_pkt; 5390 cmd_pkt->request_type = IPR_RQTYPE_IOACMD; 5391 cmd_pkt->cdb[0] = IPR_CANCEL_ALL_REQUESTS; 5392 5393 ipr_do_req(ipr_cmd, ipr_erp_request_sense, ipr_timeout, 5394 IPR_CANCEL_ALL_TIMEOUT); 5395} 5396 5397/** 5398 * ipr_dump_ioasa - Dump contents of IOASA 5399 * @ioa_cfg: ioa config struct 5400 * @ipr_cmd: ipr command struct 5401 * @res: resource entry struct 5402 * 5403 * This function is invoked by the interrupt handler when ops 5404 * fail. It will log the IOASA if appropriate. Only called 5405 * for GPDD ops. 5406 * 5407 * Return value: 5408 * none 5409 **/ 5410static void ipr_dump_ioasa(struct ipr_ioa_cfg *ioa_cfg, 5411 struct ipr_cmnd *ipr_cmd, struct ipr_resource_entry *res) 5412{ 5413 int i; 5414 u16 data_len; 5415 u32 ioasc, fd_ioasc; 5416 struct ipr_ioasa *ioasa = &ipr_cmd->s.ioasa; 5417 __be32 *ioasa_data = (__be32 *)ioasa; 5418 int error_index; 5419 5420 ioasc = be32_to_cpu(ioasa->hdr.ioasc) & IPR_IOASC_IOASC_MASK; 5421 fd_ioasc = be32_to_cpu(ioasa->hdr.fd_ioasc) & IPR_IOASC_IOASC_MASK; 5422 5423 if (0 == ioasc) 5424 return; 5425 5426 if (ioa_cfg->log_level < IPR_DEFAULT_LOG_LEVEL) 5427 return; 5428 5429 if (ioasc == IPR_IOASC_BUS_WAS_RESET && fd_ioasc) 5430 error_index = ipr_get_error(fd_ioasc); 5431 else 5432 error_index = ipr_get_error(ioasc); 5433 5434 if (ioa_cfg->log_level < IPR_MAX_LOG_LEVEL) { 5435 /* Don't log an error if the IOA already logged one */ 5436 if (ioasa->hdr.ilid != 0) 5437 return; 5438 5439 if (!ipr_is_gscsi(res)) 5440 return; 5441 5442 if (ipr_error_table[error_index].log_ioasa == 0) 5443 return; 5444 } 5445 5446 ipr_res_err(ioa_cfg, res, "%s\n", ipr_error_table[error_index].error); 5447 5448 data_len = be16_to_cpu(ioasa->hdr.ret_stat_len); 5449 if (ioa_cfg->sis64 && sizeof(struct ipr_ioasa64) < data_len) 5450 data_len = sizeof(struct ipr_ioasa64); 5451 else if (!ioa_cfg->sis64 && sizeof(struct ipr_ioasa) < data_len) 5452 data_len = sizeof(struct ipr_ioasa); 5453 5454 ipr_err("IOASA Dump:\n"); 5455 5456 for (i = 0; i < data_len / 4; i += 4) { 5457 ipr_err("%08X: %08X %08X %08X %08X\n", i*4, 5458 be32_to_cpu(ioasa_data[i]), 5459 be32_to_cpu(ioasa_data[i+1]), 5460 be32_to_cpu(ioasa_data[i+2]), 5461 be32_to_cpu(ioasa_data[i+3])); 5462 } 5463} 5464 5465/** 5466 * ipr_gen_sense - Generate SCSI sense data from an IOASA 5467 * @ioasa: IOASA 5468 * @sense_buf: sense data buffer 5469 * 5470 * Return value: 5471 * none 5472 **/ 5473static void ipr_gen_sense(struct ipr_cmnd *ipr_cmd) 5474{ 5475 u32 failing_lba; 5476 u8 *sense_buf = ipr_cmd->scsi_cmd->sense_buffer; 5477 struct ipr_resource_entry *res = ipr_cmd->scsi_cmd->device->hostdata; 5478 struct ipr_ioasa *ioasa = &ipr_cmd->s.ioasa; 5479 u32 ioasc = be32_to_cpu(ioasa->hdr.ioasc); 5480 5481 memset(sense_buf, 0, SCSI_SENSE_BUFFERSIZE); 5482 5483 if (ioasc >= IPR_FIRST_DRIVER_IOASC) 5484 return; 5485 5486 ipr_cmd->scsi_cmd->result = SAM_STAT_CHECK_CONDITION; 5487 5488 if (ipr_is_vset_device(res) && 5489 ioasc == IPR_IOASC_MED_DO_NOT_REALLOC && 5490 ioasa->u.vset.failing_lba_hi != 0) { 5491 sense_buf[0] = 0x72; 5492 sense_buf[1] = IPR_IOASC_SENSE_KEY(ioasc); 5493 sense_buf[2] = IPR_IOASC_SENSE_CODE(ioasc); 5494 sense_buf[3] = IPR_IOASC_SENSE_QUAL(ioasc); 5495 5496 sense_buf[7] = 12; 5497 sense_buf[8] = 0; 5498 sense_buf[9] = 0x0A; 5499 sense_buf[10] = 0x80; 5500 5501 failing_lba = be32_to_cpu(ioasa->u.vset.failing_lba_hi); 5502 5503 sense_buf[12] = (failing_lba & 0xff000000) >> 24; 5504 sense_buf[13] = (failing_lba & 0x00ff0000) >> 16; 5505 sense_buf[14] = (failing_lba & 0x0000ff00) >> 8; 5506 sense_buf[15] = failing_lba & 0x000000ff; 5507 5508 failing_lba = be32_to_cpu(ioasa->u.vset.failing_lba_lo); 5509 5510 sense_buf[16] = (failing_lba & 0xff000000) >> 24; 5511 sense_buf[17] = (failing_lba & 0x00ff0000) >> 16; 5512 sense_buf[18] = (failing_lba & 0x0000ff00) >> 8; 5513 sense_buf[19] = failing_lba & 0x000000ff; 5514 } else { 5515 sense_buf[0] = 0x70; 5516 sense_buf[2] = IPR_IOASC_SENSE_KEY(ioasc); 5517 sense_buf[12] = IPR_IOASC_SENSE_CODE(ioasc); 5518 sense_buf[13] = IPR_IOASC_SENSE_QUAL(ioasc); 5519 5520 /* Illegal request */ 5521 if ((IPR_IOASC_SENSE_KEY(ioasc) == 0x05) && 5522 (be32_to_cpu(ioasa->hdr.ioasc_specific) & IPR_FIELD_POINTER_VALID)) { 5523 sense_buf[7] = 10; /* additional length */ 5524 5525 /* IOARCB was in error */ 5526 if (IPR_IOASC_SENSE_CODE(ioasc) == 0x24) 5527 sense_buf[15] = 0xC0; 5528 else /* Parameter data was invalid */ 5529 sense_buf[15] = 0x80; 5530 5531 sense_buf[16] = 5532 ((IPR_FIELD_POINTER_MASK & 5533 be32_to_cpu(ioasa->hdr.ioasc_specific)) >> 8) & 0xff; 5534 sense_buf[17] = 5535 (IPR_FIELD_POINTER_MASK & 5536 be32_to_cpu(ioasa->hdr.ioasc_specific)) & 0xff; 5537 } else { 5538 if (ioasc == IPR_IOASC_MED_DO_NOT_REALLOC) { 5539 if (ipr_is_vset_device(res)) 5540 failing_lba = be32_to_cpu(ioasa->u.vset.failing_lba_lo); 5541 else 5542 failing_lba = be32_to_cpu(ioasa->u.dasd.failing_lba); 5543 5544 sense_buf[0] |= 0x80; /* Or in the Valid bit */ 5545 sense_buf[3] = (failing_lba & 0xff000000) >> 24; 5546 sense_buf[4] = (failing_lba & 0x00ff0000) >> 16; 5547 sense_buf[5] = (failing_lba & 0x0000ff00) >> 8; 5548 sense_buf[6] = failing_lba & 0x000000ff; 5549 } 5550 5551 sense_buf[7] = 6; /* additional length */ 5552 } 5553 } 5554} 5555 5556/** 5557 * ipr_get_autosense - Copy autosense data to sense buffer 5558 * @ipr_cmd: ipr command struct 5559 * 5560 * This function copies the autosense buffer to the buffer 5561 * in the scsi_cmd, if there is autosense available. 5562 * 5563 * Return value: 5564 * 1 if autosense was available / 0 if not 5565 **/ 5566static int ipr_get_autosense(struct ipr_cmnd *ipr_cmd) 5567{ 5568 struct ipr_ioasa *ioasa = &ipr_cmd->s.ioasa; 5569 struct ipr_ioasa64 *ioasa64 = &ipr_cmd->s.ioasa64; 5570 5571 if ((be32_to_cpu(ioasa->hdr.ioasc_specific) & IPR_AUTOSENSE_VALID) == 0) 5572 return 0; 5573 5574 if (ipr_cmd->ioa_cfg->sis64) 5575 memcpy(ipr_cmd->scsi_cmd->sense_buffer, ioasa64->auto_sense.data, 5576 min_t(u16, be16_to_cpu(ioasa64->auto_sense.auto_sense_len), 5577 SCSI_SENSE_BUFFERSIZE)); 5578 else 5579 memcpy(ipr_cmd->scsi_cmd->sense_buffer, ioasa->auto_sense.data, 5580 min_t(u16, be16_to_cpu(ioasa->auto_sense.auto_sense_len), 5581 SCSI_SENSE_BUFFERSIZE)); 5582 return 1; 5583} 5584 5585/** 5586 * ipr_erp_start - Process an error response for a SCSI op 5587 * @ioa_cfg: ioa config struct 5588 * @ipr_cmd: ipr command struct 5589 * 5590 * This function determines whether or not to initiate ERP 5591 * on the affected device. 5592 * 5593 * Return value: 5594 * nothing 5595 **/ 5596static void ipr_erp_start(struct ipr_ioa_cfg *ioa_cfg, 5597 struct ipr_cmnd *ipr_cmd) 5598{ 5599 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd; 5600 struct ipr_resource_entry *res = scsi_cmd->device->hostdata; 5601 u32 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc); 5602 u32 masked_ioasc = ioasc & IPR_IOASC_IOASC_MASK; 5603 5604 if (!res) { 5605 ipr_scsi_eh_done(ipr_cmd); 5606 return; 5607 } 5608 5609 if (!ipr_is_gscsi(res) && masked_ioasc != IPR_IOASC_HW_DEV_BUS_STATUS) 5610 ipr_gen_sense(ipr_cmd); 5611 5612 ipr_dump_ioasa(ioa_cfg, ipr_cmd, res); 5613 5614 switch (masked_ioasc) { 5615 case IPR_IOASC_ABORTED_CMD_TERM_BY_HOST: 5616 if (ipr_is_naca_model(res)) 5617 scsi_cmd->result |= (DID_ABORT << 16); 5618 else 5619 scsi_cmd->result |= (DID_IMM_RETRY << 16); 5620 break; 5621 case IPR_IOASC_IR_RESOURCE_HANDLE: 5622 case IPR_IOASC_IR_NO_CMDS_TO_2ND_IOA: 5623 scsi_cmd->result |= (DID_NO_CONNECT << 16); 5624 break; 5625 case IPR_IOASC_HW_SEL_TIMEOUT: 5626 scsi_cmd->result |= (DID_NO_CONNECT << 16); 5627 if (!ipr_is_naca_model(res)) 5628 res->needs_sync_complete = 1; 5629 break; 5630 case IPR_IOASC_SYNC_REQUIRED: 5631 if (!res->in_erp) 5632 res->needs_sync_complete = 1; 5633 scsi_cmd->result |= (DID_IMM_RETRY << 16); 5634 break; 5635 case IPR_IOASC_MED_DO_NOT_REALLOC: /* prevent retries */ 5636 case IPR_IOASA_IR_DUAL_IOA_DISABLED: 5637 scsi_cmd->result |= (DID_PASSTHROUGH << 16); 5638 break; 5639 case IPR_IOASC_BUS_WAS_RESET: 5640 case IPR_IOASC_BUS_WAS_RESET_BY_OTHER: 5641 /* 5642 * Report the bus reset and ask for a retry. The device 5643 * will give CC/UA the next command. 5644 */ 5645 if (!res->resetting_device) 5646 scsi_report_bus_reset(ioa_cfg->host, scsi_cmd->device->channel); 5647 scsi_cmd->result |= (DID_ERROR << 16); 5648 if (!ipr_is_naca_model(res)) 5649 res->needs_sync_complete = 1; 5650 break; 5651 case IPR_IOASC_HW_DEV_BUS_STATUS: 5652 scsi_cmd->result |= IPR_IOASC_SENSE_STATUS(ioasc); 5653 if (IPR_IOASC_SENSE_STATUS(ioasc) == SAM_STAT_CHECK_CONDITION) { 5654 if (!ipr_get_autosense(ipr_cmd)) { 5655 if (!ipr_is_naca_model(res)) { 5656 ipr_erp_cancel_all(ipr_cmd); 5657 return; 5658 } 5659 } 5660 } 5661 if (!ipr_is_naca_model(res)) 5662 res->needs_sync_complete = 1; 5663 break; 5664 case IPR_IOASC_NR_INIT_CMD_REQUIRED: 5665 break; 5666 default: 5667 if (IPR_IOASC_SENSE_KEY(ioasc) > RECOVERED_ERROR) 5668 scsi_cmd->result |= (DID_ERROR << 16); 5669 if (!ipr_is_vset_device(res) && !ipr_is_naca_model(res)) 5670 res->needs_sync_complete = 1; 5671 break; 5672 } 5673 5674 scsi_dma_unmap(ipr_cmd->scsi_cmd); 5675 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q); 5676 scsi_cmd->scsi_done(scsi_cmd); 5677} 5678 5679/** 5680 * ipr_scsi_done - mid-layer done function 5681 * @ipr_cmd: ipr command struct 5682 * 5683 * This function is invoked by the interrupt handler for 5684 * ops generated by the SCSI mid-layer 5685 * 5686 * Return value: 5687 * none 5688 **/ 5689static void ipr_scsi_done(struct ipr_cmnd *ipr_cmd) 5690{ 5691 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 5692 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd; 5693 u32 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc); 5694 5695 scsi_set_resid(scsi_cmd, be32_to_cpu(ipr_cmd->s.ioasa.hdr.residual_data_len)); 5696 5697 if (likely(IPR_IOASC_SENSE_KEY(ioasc) == 0)) { 5698 scsi_dma_unmap(ipr_cmd->scsi_cmd); 5699 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q); 5700 scsi_cmd->scsi_done(scsi_cmd); 5701 } else 5702 ipr_erp_start(ioa_cfg, ipr_cmd); 5703} 5704 5705/** 5706 * ipr_queuecommand - Queue a mid-layer request 5707 * @scsi_cmd: scsi command struct 5708 * @done: done function 5709 * 5710 * This function queues a request generated by the mid-layer. 5711 * 5712 * Return value: 5713 * 0 on success 5714 * SCSI_MLQUEUE_DEVICE_BUSY if device is busy 5715 * SCSI_MLQUEUE_HOST_BUSY if host is busy 5716 **/ 5717static int ipr_queuecommand_lck(struct scsi_cmnd *scsi_cmd, 5718 void (*done) (struct scsi_cmnd *)) 5719{ 5720 struct ipr_ioa_cfg *ioa_cfg; 5721 struct ipr_resource_entry *res; 5722 struct ipr_ioarcb *ioarcb; 5723 struct ipr_cmnd *ipr_cmd; 5724 int rc = 0; 5725 5726 scsi_cmd->scsi_done = done; 5727 ioa_cfg = (struct ipr_ioa_cfg *)scsi_cmd->device->host->hostdata; 5728 res = scsi_cmd->device->hostdata; 5729 scsi_cmd->result = (DID_OK << 16); 5730 5731 /* 5732 * We are currently blocking all devices due to a host reset 5733 * We have told the host to stop giving us new requests, but 5734 * ERP ops don't count. FIXME 5735 */ 5736 if (unlikely(!ioa_cfg->allow_cmds && !ioa_cfg->ioa_is_dead)) 5737 return SCSI_MLQUEUE_HOST_BUSY; 5738 5739 /* 5740 * FIXME - Create scsi_set_host_offline interface 5741 * and the ioa_is_dead check can be removed 5742 */ 5743 if (unlikely(ioa_cfg->ioa_is_dead || !res)) { 5744 memset(scsi_cmd->sense_buffer, 0, SCSI_SENSE_BUFFERSIZE); 5745 scsi_cmd->result = (DID_NO_CONNECT << 16); 5746 scsi_cmd->scsi_done(scsi_cmd); 5747 return 0; 5748 } 5749 5750 if (ipr_is_gata(res) && res->sata_port) 5751 return ata_sas_queuecmd(scsi_cmd, res->sata_port->ap); 5752 5753 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg); 5754 ioarcb = &ipr_cmd->ioarcb; 5755 list_add_tail(&ipr_cmd->queue, &ioa_cfg->pending_q); 5756 5757 memcpy(ioarcb->cmd_pkt.cdb, scsi_cmd->cmnd, scsi_cmd->cmd_len); 5758 ipr_cmd->scsi_cmd = scsi_cmd; 5759 ioarcb->res_handle = res->res_handle; 5760 ipr_cmd->done = ipr_scsi_done; 5761 ipr_trc_hook(ipr_cmd, IPR_TRACE_START, IPR_GET_RES_PHYS_LOC(res)); 5762 5763 if (ipr_is_gscsi(res) || ipr_is_vset_device(res)) { 5764 if (scsi_cmd->underflow == 0) 5765 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_NO_ULEN_CHK; 5766 5767 if (res->needs_sync_complete) { 5768 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_SYNC_COMPLETE; 5769 res->needs_sync_complete = 0; 5770 } 5771 5772 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_NO_LINK_DESC; 5773 ioarcb->cmd_pkt.flags_lo |= IPR_FLAGS_LO_DELAY_AFTER_RST; 5774 ioarcb->cmd_pkt.flags_lo |= IPR_FLAGS_LO_ALIGNED_BFR; 5775 ioarcb->cmd_pkt.flags_lo |= ipr_get_task_attributes(scsi_cmd); 5776 } 5777 5778 if (scsi_cmd->cmnd[0] >= 0xC0 && 5779 (!ipr_is_gscsi(res) || scsi_cmd->cmnd[0] == IPR_QUERY_RSRC_STATE)) 5780 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_IOACMD; 5781 5782 if (likely(rc == 0)) { 5783 if (ioa_cfg->sis64) 5784 rc = ipr_build_ioadl64(ioa_cfg, ipr_cmd); 5785 else 5786 rc = ipr_build_ioadl(ioa_cfg, ipr_cmd); 5787 } 5788 5789 if (likely(rc == 0)) { 5790 mb(); 5791 ipr_send_command(ipr_cmd); 5792 } else { 5793 list_move_tail(&ipr_cmd->queue, &ioa_cfg->free_q); 5794 return SCSI_MLQUEUE_HOST_BUSY; 5795 } 5796 5797 return 0; 5798} 5799 5800static DEF_SCSI_QCMD(ipr_queuecommand) 5801 5802/** 5803 * ipr_ioctl - IOCTL handler 5804 * @sdev: scsi device struct 5805 * @cmd: IOCTL cmd 5806 * @arg: IOCTL arg 5807 * 5808 * Return value: 5809 * 0 on success / other on failure 5810 **/ 5811static int ipr_ioctl(struct scsi_device *sdev, int cmd, void __user *arg) 5812{ 5813 struct ipr_resource_entry *res; 5814 5815 res = (struct ipr_resource_entry *)sdev->hostdata; 5816 if (res && ipr_is_gata(res)) { 5817 if (cmd == HDIO_GET_IDENTITY) 5818 return -ENOTTY; 5819 return ata_sas_scsi_ioctl(res->sata_port->ap, sdev, cmd, arg); 5820 } 5821 5822 return -EINVAL; 5823} 5824 5825/** 5826 * ipr_info - Get information about the card/driver 5827 * @scsi_host: scsi host struct 5828 * 5829 * Return value: 5830 * pointer to buffer with description string 5831 **/ 5832static const char * ipr_ioa_info(struct Scsi_Host *host) 5833{ 5834 static char buffer[512]; 5835 struct ipr_ioa_cfg *ioa_cfg; 5836 unsigned long lock_flags = 0; 5837 5838 ioa_cfg = (struct ipr_ioa_cfg *) host->hostdata; 5839 5840 spin_lock_irqsave(host->host_lock, lock_flags); 5841 sprintf(buffer, "IBM %X Storage Adapter", ioa_cfg->type); 5842 spin_unlock_irqrestore(host->host_lock, lock_flags); 5843 5844 return buffer; 5845} 5846 5847static struct scsi_host_template driver_template = { 5848 .module = THIS_MODULE, 5849 .name = "IPR", 5850 .info = ipr_ioa_info, 5851 .ioctl = ipr_ioctl, 5852 .queuecommand = ipr_queuecommand, 5853 .eh_abort_handler = ipr_eh_abort, 5854 .eh_device_reset_handler = ipr_eh_dev_reset, 5855 .eh_host_reset_handler = ipr_eh_host_reset, 5856 .slave_alloc = ipr_slave_alloc, 5857 .slave_configure = ipr_slave_configure, 5858 .slave_destroy = ipr_slave_destroy, 5859 .target_alloc = ipr_target_alloc, 5860 .target_destroy = ipr_target_destroy, 5861 .change_queue_depth = ipr_change_queue_depth, 5862 .change_queue_type = ipr_change_queue_type, 5863 .bios_param = ipr_biosparam, 5864 .can_queue = IPR_MAX_COMMANDS, 5865 .this_id = -1, 5866 .sg_tablesize = IPR_MAX_SGLIST, 5867 .max_sectors = IPR_IOA_MAX_SECTORS, 5868 .cmd_per_lun = IPR_MAX_CMD_PER_LUN, 5869 .use_clustering = ENABLE_CLUSTERING, 5870 .shost_attrs = ipr_ioa_attrs, 5871 .sdev_attrs = ipr_dev_attrs, 5872 .proc_name = IPR_NAME 5873}; 5874 5875/** 5876 * ipr_ata_phy_reset - libata phy_reset handler 5877 * @ap: ata port to reset 5878 * 5879 **/ 5880static void ipr_ata_phy_reset(struct ata_port *ap) 5881{ 5882 unsigned long flags; 5883 struct ipr_sata_port *sata_port = ap->private_data; 5884 struct ipr_resource_entry *res = sata_port->res; 5885 struct ipr_ioa_cfg *ioa_cfg = sata_port->ioa_cfg; 5886 int rc; 5887 5888 ENTER; 5889 spin_lock_irqsave(ioa_cfg->host->host_lock, flags); 5890 while(ioa_cfg->in_reset_reload) { 5891 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags); 5892 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload); 5893 spin_lock_irqsave(ioa_cfg->host->host_lock, flags); 5894 } 5895 5896 if (!ioa_cfg->allow_cmds) 5897 goto out_unlock; 5898 5899 rc = ipr_device_reset(ioa_cfg, res); 5900 5901 if (rc) { 5902 ap->link.device[0].class = ATA_DEV_NONE; 5903 goto out_unlock; 5904 } 5905 5906 ap->link.device[0].class = res->ata_class; 5907 if (ap->link.device[0].class == ATA_DEV_UNKNOWN) 5908 ap->link.device[0].class = ATA_DEV_NONE; 5909 5910out_unlock: 5911 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags); 5912 LEAVE; 5913} 5914 5915/** 5916 * ipr_ata_post_internal - Cleanup after an internal command 5917 * @qc: ATA queued command 5918 * 5919 * Return value: 5920 * none 5921 **/ 5922static void ipr_ata_post_internal(struct ata_queued_cmd *qc) 5923{ 5924 struct ipr_sata_port *sata_port = qc->ap->private_data; 5925 struct ipr_ioa_cfg *ioa_cfg = sata_port->ioa_cfg; 5926 struct ipr_cmnd *ipr_cmd; 5927 unsigned long flags; 5928 5929 spin_lock_irqsave(ioa_cfg->host->host_lock, flags); 5930 while(ioa_cfg->in_reset_reload) { 5931 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags); 5932 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload); 5933 spin_lock_irqsave(ioa_cfg->host->host_lock, flags); 5934 } 5935 5936 list_for_each_entry(ipr_cmd, &ioa_cfg->pending_q, queue) { 5937 if (ipr_cmd->qc == qc) { 5938 ipr_device_reset(ioa_cfg, sata_port->res); 5939 break; 5940 } 5941 } 5942 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags); 5943} 5944 5945/** 5946 * ipr_copy_sata_tf - Copy a SATA taskfile to an IOA data structure 5947 * @regs: destination 5948 * @tf: source ATA taskfile 5949 * 5950 * Return value: 5951 * none 5952 **/ 5953static void ipr_copy_sata_tf(struct ipr_ioarcb_ata_regs *regs, 5954 struct ata_taskfile *tf) 5955{ 5956 regs->feature = tf->feature; 5957 regs->nsect = tf->nsect; 5958 regs->lbal = tf->lbal; 5959 regs->lbam = tf->lbam; 5960 regs->lbah = tf->lbah; 5961 regs->device = tf->device; 5962 regs->command = tf->command; 5963 regs->hob_feature = tf->hob_feature; 5964 regs->hob_nsect = tf->hob_nsect; 5965 regs->hob_lbal = tf->hob_lbal; 5966 regs->hob_lbam = tf->hob_lbam; 5967 regs->hob_lbah = tf->hob_lbah; 5968 regs->ctl = tf->ctl; 5969} 5970 5971/** 5972 * ipr_sata_done - done function for SATA commands 5973 * @ipr_cmd: ipr command struct 5974 * 5975 * This function is invoked by the interrupt handler for 5976 * ops generated by the SCSI mid-layer to SATA devices 5977 * 5978 * Return value: 5979 * none 5980 **/ 5981static void ipr_sata_done(struct ipr_cmnd *ipr_cmd) 5982{ 5983 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 5984 struct ata_queued_cmd *qc = ipr_cmd->qc; 5985 struct ipr_sata_port *sata_port = qc->ap->private_data; 5986 struct ipr_resource_entry *res = sata_port->res; 5987 u32 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc); 5988 5989 if (ipr_cmd->ioa_cfg->sis64) 5990 memcpy(&sata_port->ioasa, &ipr_cmd->s.ioasa64.u.gata, 5991 sizeof(struct ipr_ioasa_gata)); 5992 else 5993 memcpy(&sata_port->ioasa, &ipr_cmd->s.ioasa.u.gata, 5994 sizeof(struct ipr_ioasa_gata)); 5995 ipr_dump_ioasa(ioa_cfg, ipr_cmd, res); 5996 5997 if (be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc_specific) & IPR_ATA_DEVICE_WAS_RESET) 5998 scsi_report_device_reset(ioa_cfg->host, res->bus, res->target); 5999 6000 if (IPR_IOASC_SENSE_KEY(ioasc) > RECOVERED_ERROR) 6001 qc->err_mask |= __ac_err_mask(sata_port->ioasa.status); 6002 else 6003 qc->err_mask |= ac_err_mask(sata_port->ioasa.status); 6004 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q); 6005 ata_qc_complete(qc); 6006} 6007 6008/** 6009 * ipr_build_ata_ioadl64 - Build an ATA scatter/gather list 6010 * @ipr_cmd: ipr command struct 6011 * @qc: ATA queued command 6012 * 6013 **/ 6014static void ipr_build_ata_ioadl64(struct ipr_cmnd *ipr_cmd, 6015 struct ata_queued_cmd *qc) 6016{ 6017 u32 ioadl_flags = 0; 6018 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb; 6019 struct ipr_ioadl64_desc *ioadl64 = ipr_cmd->i.ioadl64; 6020 struct ipr_ioadl64_desc *last_ioadl64 = NULL; 6021 int len = qc->nbytes; 6022 struct scatterlist *sg; 6023 unsigned int si; 6024 dma_addr_t dma_addr = ipr_cmd->dma_addr; 6025 6026 if (len == 0) 6027 return; 6028 6029 if (qc->dma_dir == DMA_TO_DEVICE) { 6030 ioadl_flags = IPR_IOADL_FLAGS_WRITE; 6031 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ; 6032 } else if (qc->dma_dir == DMA_FROM_DEVICE) 6033 ioadl_flags = IPR_IOADL_FLAGS_READ; 6034 6035 ioarcb->data_transfer_length = cpu_to_be32(len); 6036 ioarcb->ioadl_len = 6037 cpu_to_be32(sizeof(struct ipr_ioadl64_desc) * ipr_cmd->dma_use_sg); 6038 ioarcb->u.sis64_addr_data.data_ioadl_addr = 6039 cpu_to_be64(dma_addr + offsetof(struct ipr_cmnd, i.ata_ioadl)); 6040 6041 for_each_sg(qc->sg, sg, qc->n_elem, si) { 6042 ioadl64->flags = cpu_to_be32(ioadl_flags); 6043 ioadl64->data_len = cpu_to_be32(sg_dma_len(sg)); 6044 ioadl64->address = cpu_to_be64(sg_dma_address(sg)); 6045 6046 last_ioadl64 = ioadl64; 6047 ioadl64++; 6048 } 6049 6050 if (likely(last_ioadl64)) 6051 last_ioadl64->flags |= cpu_to_be32(IPR_IOADL_FLAGS_LAST); 6052} 6053 6054/** 6055 * ipr_build_ata_ioadl - Build an ATA scatter/gather list 6056 * @ipr_cmd: ipr command struct 6057 * @qc: ATA queued command 6058 * 6059 **/ 6060static void ipr_build_ata_ioadl(struct ipr_cmnd *ipr_cmd, 6061 struct ata_queued_cmd *qc) 6062{ 6063 u32 ioadl_flags = 0; 6064 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb; 6065 struct ipr_ioadl_desc *ioadl = ipr_cmd->i.ioadl; 6066 struct ipr_ioadl_desc *last_ioadl = NULL; 6067 int len = qc->nbytes; 6068 struct scatterlist *sg; 6069 unsigned int si; 6070 6071 if (len == 0) 6072 return; 6073 6074 if (qc->dma_dir == DMA_TO_DEVICE) { 6075 ioadl_flags = IPR_IOADL_FLAGS_WRITE; 6076 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ; 6077 ioarcb->data_transfer_length = cpu_to_be32(len); 6078 ioarcb->ioadl_len = 6079 cpu_to_be32(sizeof(struct ipr_ioadl_desc) * ipr_cmd->dma_use_sg); 6080 } else if (qc->dma_dir == DMA_FROM_DEVICE) { 6081 ioadl_flags = IPR_IOADL_FLAGS_READ; 6082 ioarcb->read_data_transfer_length = cpu_to_be32(len); 6083 ioarcb->read_ioadl_len = 6084 cpu_to_be32(sizeof(struct ipr_ioadl_desc) * ipr_cmd->dma_use_sg); 6085 } 6086 6087 for_each_sg(qc->sg, sg, qc->n_elem, si) { 6088 ioadl->flags_and_data_len = cpu_to_be32(ioadl_flags | sg_dma_len(sg)); 6089 ioadl->address = cpu_to_be32(sg_dma_address(sg)); 6090 6091 last_ioadl = ioadl; 6092 ioadl++; 6093 } 6094 6095 if (likely(last_ioadl)) 6096 last_ioadl->flags_and_data_len |= cpu_to_be32(IPR_IOADL_FLAGS_LAST); 6097} 6098 6099/** 6100 * ipr_qc_issue - Issue a SATA qc to a device 6101 * @qc: queued command 6102 * 6103 * Return value: 6104 * 0 if success 6105 **/ 6106static unsigned int ipr_qc_issue(struct ata_queued_cmd *qc) 6107{ 6108 struct ata_port *ap = qc->ap; 6109 struct ipr_sata_port *sata_port = ap->private_data; 6110 struct ipr_resource_entry *res = sata_port->res; 6111 struct ipr_ioa_cfg *ioa_cfg = sata_port->ioa_cfg; 6112 struct ipr_cmnd *ipr_cmd; 6113 struct ipr_ioarcb *ioarcb; 6114 struct ipr_ioarcb_ata_regs *regs; 6115 6116 if (unlikely(!ioa_cfg->allow_cmds || ioa_cfg->ioa_is_dead)) 6117 return AC_ERR_SYSTEM; 6118 6119 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg); 6120 ioarcb = &ipr_cmd->ioarcb; 6121 6122 if (ioa_cfg->sis64) { 6123 regs = &ipr_cmd->i.ata_ioadl.regs; 6124 ioarcb->add_cmd_parms_offset = cpu_to_be16(sizeof(*ioarcb)); 6125 } else 6126 regs = &ioarcb->u.add_data.u.regs; 6127 6128 memset(regs, 0, sizeof(*regs)); 6129 ioarcb->add_cmd_parms_len = cpu_to_be16(sizeof(*regs)); 6130 6131 list_add_tail(&ipr_cmd->queue, &ioa_cfg->pending_q); 6132 ipr_cmd->qc = qc; 6133 ipr_cmd->done = ipr_sata_done; 6134 ipr_cmd->ioarcb.res_handle = res->res_handle; 6135 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_ATA_PASSTHRU; 6136 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_NO_LINK_DESC; 6137 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_NO_ULEN_CHK; 6138 ipr_cmd->dma_use_sg = qc->n_elem; 6139 6140 if (ioa_cfg->sis64) 6141 ipr_build_ata_ioadl64(ipr_cmd, qc); 6142 else 6143 ipr_build_ata_ioadl(ipr_cmd, qc); 6144 6145 regs->flags |= IPR_ATA_FLAG_STATUS_ON_GOOD_COMPLETION; 6146 ipr_copy_sata_tf(regs, &qc->tf); 6147 memcpy(ioarcb->cmd_pkt.cdb, qc->cdb, IPR_MAX_CDB_LEN); 6148 ipr_trc_hook(ipr_cmd, IPR_TRACE_START, IPR_GET_RES_PHYS_LOC(res)); 6149 6150 switch (qc->tf.protocol) { 6151 case ATA_PROT_NODATA: 6152 case ATA_PROT_PIO: 6153 break; 6154 6155 case ATA_PROT_DMA: 6156 regs->flags |= IPR_ATA_FLAG_XFER_TYPE_DMA; 6157 break; 6158 6159 case ATAPI_PROT_PIO: 6160 case ATAPI_PROT_NODATA: 6161 regs->flags |= IPR_ATA_FLAG_PACKET_CMD; 6162 break; 6163 6164 case ATAPI_PROT_DMA: 6165 regs->flags |= IPR_ATA_FLAG_PACKET_CMD; 6166 regs->flags |= IPR_ATA_FLAG_XFER_TYPE_DMA; 6167 break; 6168 6169 default: 6170 WARN_ON(1); 6171 return AC_ERR_INVALID; 6172 } 6173 6174 mb(); 6175 6176 ipr_send_command(ipr_cmd); 6177 6178 return 0; 6179} 6180 6181/** 6182 * ipr_qc_fill_rtf - Read result TF 6183 * @qc: ATA queued command 6184 * 6185 * Return value: 6186 * true 6187 **/ 6188static bool ipr_qc_fill_rtf(struct ata_queued_cmd *qc) 6189{ 6190 struct ipr_sata_port *sata_port = qc->ap->private_data; 6191 struct ipr_ioasa_gata *g = &sata_port->ioasa; 6192 struct ata_taskfile *tf = &qc->result_tf; 6193 6194 tf->feature = g->error; 6195 tf->nsect = g->nsect; 6196 tf->lbal = g->lbal; 6197 tf->lbam = g->lbam; 6198 tf->lbah = g->lbah; 6199 tf->device = g->device; 6200 tf->command = g->status; 6201 tf->hob_nsect = g->hob_nsect; 6202 tf->hob_lbal = g->hob_lbal; 6203 tf->hob_lbam = g->hob_lbam; 6204 tf->hob_lbah = g->hob_lbah; 6205 tf->ctl = g->alt_status; 6206 6207 return true; 6208} 6209 6210static struct ata_port_operations ipr_sata_ops = { 6211 .phy_reset = ipr_ata_phy_reset, 6212 .hardreset = ipr_sata_reset, 6213 .post_internal_cmd = ipr_ata_post_internal, 6214 .qc_prep = ata_noop_qc_prep, 6215 .qc_issue = ipr_qc_issue, 6216 .qc_fill_rtf = ipr_qc_fill_rtf, 6217 .port_start = ata_sas_port_start, 6218 .port_stop = ata_sas_port_stop 6219}; 6220 6221static struct ata_port_info sata_port_info = { 6222 .flags = ATA_FLAG_SATA | ATA_FLAG_NO_LEGACY | ATA_FLAG_SATA_RESET | 6223 ATA_FLAG_MMIO | ATA_FLAG_PIO_DMA, 6224 .pio_mask = 0x10, /* pio4 */ 6225 .mwdma_mask = 0x07, 6226 .udma_mask = 0x7f, /* udma0-6 */ 6227 .port_ops = &ipr_sata_ops 6228}; 6229 6230#ifdef CONFIG_PPC_PSERIES 6231static const u16 ipr_blocked_processors[] = { 6232 PV_NORTHSTAR, 6233 PV_PULSAR, 6234 PV_POWER4, 6235 PV_ICESTAR, 6236 PV_SSTAR, 6237 PV_POWER4p, 6238 PV_630, 6239 PV_630p 6240}; 6241 6242/** 6243 * ipr_invalid_adapter - Determine if this adapter is supported on this hardware 6244 * @ioa_cfg: ioa cfg struct 6245 * 6246 * Adapters that use Gemstone revision < 3.1 do not work reliably on 6247 * certain pSeries hardware. This function determines if the given 6248 * adapter is in one of these confgurations or not. 6249 * 6250 * Return value: 6251 * 1 if adapter is not supported / 0 if adapter is supported 6252 **/ 6253static int ipr_invalid_adapter(struct ipr_ioa_cfg *ioa_cfg) 6254{ 6255 int i; 6256 6257 if ((ioa_cfg->type == 0x5702) && (ioa_cfg->pdev->revision < 4)) { 6258 for (i = 0; i < ARRAY_SIZE(ipr_blocked_processors); i++){ 6259 if (__is_processor(ipr_blocked_processors[i])) 6260 return 1; 6261 } 6262 } 6263 return 0; 6264} 6265#else 6266#define ipr_invalid_adapter(ioa_cfg) 0 6267#endif 6268 6269/** 6270 * ipr_ioa_bringdown_done - IOA bring down completion. 6271 * @ipr_cmd: ipr command struct 6272 * 6273 * This function processes the completion of an adapter bring down. 6274 * It wakes any reset sleepers. 6275 * 6276 * Return value: 6277 * IPR_RC_JOB_RETURN 6278 **/ 6279static int ipr_ioa_bringdown_done(struct ipr_cmnd *ipr_cmd) 6280{ 6281 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 6282 6283 ENTER; 6284 ioa_cfg->in_reset_reload = 0; 6285 ioa_cfg->reset_retries = 0; 6286 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q); 6287 wake_up_all(&ioa_cfg->reset_wait_q); 6288 6289 spin_unlock_irq(ioa_cfg->host->host_lock); 6290 scsi_unblock_requests(ioa_cfg->host); 6291 spin_lock_irq(ioa_cfg->host->host_lock); 6292 LEAVE; 6293 6294 return IPR_RC_JOB_RETURN; 6295} 6296 6297/** 6298 * ipr_ioa_reset_done - IOA reset completion. 6299 * @ipr_cmd: ipr command struct 6300 * 6301 * This function processes the completion of an adapter reset. 6302 * It schedules any necessary mid-layer add/removes and 6303 * wakes any reset sleepers. 6304 * 6305 * Return value: 6306 * IPR_RC_JOB_RETURN 6307 **/ 6308static int ipr_ioa_reset_done(struct ipr_cmnd *ipr_cmd) 6309{ 6310 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 6311 struct ipr_resource_entry *res; 6312 struct ipr_hostrcb *hostrcb, *temp; 6313 int i = 0; 6314 6315 ENTER; 6316 ioa_cfg->in_reset_reload = 0; 6317 ioa_cfg->allow_cmds = 1; 6318 ioa_cfg->reset_cmd = NULL; 6319 ioa_cfg->doorbell |= IPR_RUNTIME_RESET; 6320 6321 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) { 6322 if (ioa_cfg->allow_ml_add_del && (res->add_to_ml || res->del_from_ml)) { 6323 ipr_trace; 6324 break; 6325 } 6326 } 6327 schedule_work(&ioa_cfg->work_q); 6328 6329 list_for_each_entry_safe(hostrcb, temp, &ioa_cfg->hostrcb_free_q, queue) { 6330 list_del(&hostrcb->queue); 6331 if (i++ < IPR_NUM_LOG_HCAMS) 6332 ipr_send_hcam(ioa_cfg, IPR_HCAM_CDB_OP_CODE_LOG_DATA, hostrcb); 6333 else 6334 ipr_send_hcam(ioa_cfg, IPR_HCAM_CDB_OP_CODE_CONFIG_CHANGE, hostrcb); 6335 } 6336 6337 scsi_report_bus_reset(ioa_cfg->host, IPR_VSET_BUS); 6338 dev_info(&ioa_cfg->pdev->dev, "IOA initialized.\n"); 6339 6340 ioa_cfg->reset_retries = 0; 6341 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q); 6342 wake_up_all(&ioa_cfg->reset_wait_q); 6343 6344 spin_unlock(ioa_cfg->host->host_lock); 6345 scsi_unblock_requests(ioa_cfg->host); 6346 spin_lock(ioa_cfg->host->host_lock); 6347 6348 if (!ioa_cfg->allow_cmds) 6349 scsi_block_requests(ioa_cfg->host); 6350 6351 LEAVE; 6352 return IPR_RC_JOB_RETURN; 6353} 6354 6355/** 6356 * ipr_set_sup_dev_dflt - Initialize a Set Supported Device buffer 6357 * @supported_dev: supported device struct 6358 * @vpids: vendor product id struct 6359 * 6360 * Return value: 6361 * none 6362 **/ 6363static void ipr_set_sup_dev_dflt(struct ipr_supported_device *supported_dev, 6364 struct ipr_std_inq_vpids *vpids) 6365{ 6366 memset(supported_dev, 0, sizeof(struct ipr_supported_device)); 6367 memcpy(&supported_dev->vpids, vpids, sizeof(struct ipr_std_inq_vpids)); 6368 supported_dev->num_records = 1; 6369 supported_dev->data_length = 6370 cpu_to_be16(sizeof(struct ipr_supported_device)); 6371 supported_dev->reserved = 0; 6372} 6373 6374/** 6375 * ipr_set_supported_devs - Send Set Supported Devices for a device 6376 * @ipr_cmd: ipr command struct 6377 * 6378 * This function sends a Set Supported Devices to the adapter 6379 * 6380 * Return value: 6381 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN 6382 **/ 6383static int ipr_set_supported_devs(struct ipr_cmnd *ipr_cmd) 6384{ 6385 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 6386 struct ipr_supported_device *supp_dev = &ioa_cfg->vpd_cbs->supp_dev; 6387 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb; 6388 struct ipr_resource_entry *res = ipr_cmd->u.res; 6389 6390 ipr_cmd->job_step = ipr_ioa_reset_done; 6391 6392 list_for_each_entry_continue(res, &ioa_cfg->used_res_q, queue) { 6393 if (!ipr_is_scsi_disk(res)) 6394 continue; 6395 6396 ipr_cmd->u.res = res; 6397 ipr_set_sup_dev_dflt(supp_dev, &res->std_inq_data.vpids); 6398 6399 ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE); 6400 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ; 6401 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_IOACMD; 6402 6403 ioarcb->cmd_pkt.cdb[0] = IPR_SET_SUPPORTED_DEVICES; 6404 ioarcb->cmd_pkt.cdb[1] = IPR_SET_ALL_SUPPORTED_DEVICES; 6405 ioarcb->cmd_pkt.cdb[7] = (sizeof(struct ipr_supported_device) >> 8) & 0xff; 6406 ioarcb->cmd_pkt.cdb[8] = sizeof(struct ipr_supported_device) & 0xff; 6407 6408 ipr_init_ioadl(ipr_cmd, 6409 ioa_cfg->vpd_cbs_dma + 6410 offsetof(struct ipr_misc_cbs, supp_dev), 6411 sizeof(struct ipr_supported_device), 6412 IPR_IOADL_FLAGS_WRITE_LAST); 6413 6414 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, 6415 IPR_SET_SUP_DEVICE_TIMEOUT); 6416 6417 if (!ioa_cfg->sis64) 6418 ipr_cmd->job_step = ipr_set_supported_devs; 6419 return IPR_RC_JOB_RETURN; 6420 } 6421 6422 return IPR_RC_JOB_CONTINUE; 6423} 6424 6425/** 6426 * ipr_get_mode_page - Locate specified mode page 6427 * @mode_pages: mode page buffer 6428 * @page_code: page code to find 6429 * @len: minimum required length for mode page 6430 * 6431 * Return value: 6432 * pointer to mode page / NULL on failure 6433 **/ 6434static void *ipr_get_mode_page(struct ipr_mode_pages *mode_pages, 6435 u32 page_code, u32 len) 6436{ 6437 struct ipr_mode_page_hdr *mode_hdr; 6438 u32 page_length; 6439 u32 length; 6440 6441 if (!mode_pages || (mode_pages->hdr.length == 0)) 6442 return NULL; 6443 6444 length = (mode_pages->hdr.length + 1) - 4 - mode_pages->hdr.block_desc_len; 6445 mode_hdr = (struct ipr_mode_page_hdr *) 6446 (mode_pages->data + mode_pages->hdr.block_desc_len); 6447 6448 while (length) { 6449 if (IPR_GET_MODE_PAGE_CODE(mode_hdr) == page_code) { 6450 if (mode_hdr->page_length >= (len - sizeof(struct ipr_mode_page_hdr))) 6451 return mode_hdr; 6452 break; 6453 } else { 6454 page_length = (sizeof(struct ipr_mode_page_hdr) + 6455 mode_hdr->page_length); 6456 length -= page_length; 6457 mode_hdr = (struct ipr_mode_page_hdr *) 6458 ((unsigned long)mode_hdr + page_length); 6459 } 6460 } 6461 return NULL; 6462} 6463 6464/** 6465 * ipr_check_term_power - Check for term power errors 6466 * @ioa_cfg: ioa config struct 6467 * @mode_pages: IOAFP mode pages buffer 6468 * 6469 * Check the IOAFP's mode page 28 for term power errors 6470 * 6471 * Return value: 6472 * nothing 6473 **/ 6474static void ipr_check_term_power(struct ipr_ioa_cfg *ioa_cfg, 6475 struct ipr_mode_pages *mode_pages) 6476{ 6477 int i; 6478 int entry_length; 6479 struct ipr_dev_bus_entry *bus; 6480 struct ipr_mode_page28 *mode_page; 6481 6482 mode_page = ipr_get_mode_page(mode_pages, 0x28, 6483 sizeof(struct ipr_mode_page28)); 6484 6485 entry_length = mode_page->entry_length; 6486 6487 bus = mode_page->bus; 6488 6489 for (i = 0; i < mode_page->num_entries; i++) { 6490 if (bus->flags & IPR_SCSI_ATTR_NO_TERM_PWR) { 6491 dev_err(&ioa_cfg->pdev->dev, 6492 "Term power is absent on scsi bus %d\n", 6493 bus->res_addr.bus); 6494 } 6495 6496 bus = (struct ipr_dev_bus_entry *)((char *)bus + entry_length); 6497 } 6498} 6499 6500/** 6501 * ipr_scsi_bus_speed_limit - Limit the SCSI speed based on SES table 6502 * @ioa_cfg: ioa config struct 6503 * 6504 * Looks through the config table checking for SES devices. If 6505 * the SES device is in the SES table indicating a maximum SCSI 6506 * bus speed, the speed is limited for the bus. 6507 * 6508 * Return value: 6509 * none 6510 **/ 6511static void ipr_scsi_bus_speed_limit(struct ipr_ioa_cfg *ioa_cfg) 6512{ 6513 u32 max_xfer_rate; 6514 int i; 6515 6516 for (i = 0; i < IPR_MAX_NUM_BUSES; i++) { 6517 max_xfer_rate = ipr_get_max_scsi_speed(ioa_cfg, i, 6518 ioa_cfg->bus_attr[i].bus_width); 6519 6520 if (max_xfer_rate < ioa_cfg->bus_attr[i].max_xfer_rate) 6521 ioa_cfg->bus_attr[i].max_xfer_rate = max_xfer_rate; 6522 } 6523} 6524 6525/** 6526 * ipr_modify_ioafp_mode_page_28 - Modify IOAFP Mode Page 28 6527 * @ioa_cfg: ioa config struct 6528 * @mode_pages: mode page 28 buffer 6529 * 6530 * Updates mode page 28 based on driver configuration 6531 * 6532 * Return value: 6533 * none 6534 **/ 6535static void ipr_modify_ioafp_mode_page_28(struct ipr_ioa_cfg *ioa_cfg, 6536 struct ipr_mode_pages *mode_pages) 6537{ 6538 int i, entry_length; 6539 struct ipr_dev_bus_entry *bus; 6540 struct ipr_bus_attributes *bus_attr; 6541 struct ipr_mode_page28 *mode_page; 6542 6543 mode_page = ipr_get_mode_page(mode_pages, 0x28, 6544 sizeof(struct ipr_mode_page28)); 6545 6546 entry_length = mode_page->entry_length; 6547 6548 /* Loop for each device bus entry */ 6549 for (i = 0, bus = mode_page->bus; 6550 i < mode_page->num_entries; 6551 i++, bus = (struct ipr_dev_bus_entry *)((u8 *)bus + entry_length)) { 6552 if (bus->res_addr.bus > IPR_MAX_NUM_BUSES) { 6553 dev_err(&ioa_cfg->pdev->dev, 6554 "Invalid resource address reported: 0x%08X\n", 6555 IPR_GET_PHYS_LOC(bus->res_addr)); 6556 continue; 6557 } 6558 6559 bus_attr = &ioa_cfg->bus_attr[i]; 6560 bus->extended_reset_delay = IPR_EXTENDED_RESET_DELAY; 6561 bus->bus_width = bus_attr->bus_width; 6562 bus->max_xfer_rate = cpu_to_be32(bus_attr->max_xfer_rate); 6563 bus->flags &= ~IPR_SCSI_ATTR_QAS_MASK; 6564 if (bus_attr->qas_enabled) 6565 bus->flags |= IPR_SCSI_ATTR_ENABLE_QAS; 6566 else 6567 bus->flags |= IPR_SCSI_ATTR_DISABLE_QAS; 6568 } 6569} 6570 6571/** 6572 * ipr_build_mode_select - Build a mode select command 6573 * @ipr_cmd: ipr command struct 6574 * @res_handle: resource handle to send command to 6575 * @parm: Byte 2 of Mode Sense command 6576 * @dma_addr: DMA buffer address 6577 * @xfer_len: data transfer length 6578 * 6579 * Return value: 6580 * none 6581 **/ 6582static void ipr_build_mode_select(struct ipr_cmnd *ipr_cmd, 6583 __be32 res_handle, u8 parm, 6584 dma_addr_t dma_addr, u8 xfer_len) 6585{ 6586 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb; 6587 6588 ioarcb->res_handle = res_handle; 6589 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_SCSICDB; 6590 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ; 6591 ioarcb->cmd_pkt.cdb[0] = MODE_SELECT; 6592 ioarcb->cmd_pkt.cdb[1] = parm; 6593 ioarcb->cmd_pkt.cdb[4] = xfer_len; 6594 6595 ipr_init_ioadl(ipr_cmd, dma_addr, xfer_len, IPR_IOADL_FLAGS_WRITE_LAST); 6596} 6597 6598/** 6599 * ipr_ioafp_mode_select_page28 - Issue Mode Select Page 28 to IOA 6600 * @ipr_cmd: ipr command struct 6601 * 6602 * This function sets up the SCSI bus attributes and sends 6603 * a Mode Select for Page 28 to activate them. 6604 * 6605 * Return value: 6606 * IPR_RC_JOB_RETURN 6607 **/ 6608static int ipr_ioafp_mode_select_page28(struct ipr_cmnd *ipr_cmd) 6609{ 6610 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 6611 struct ipr_mode_pages *mode_pages = &ioa_cfg->vpd_cbs->mode_pages; 6612 int length; 6613 6614 ENTER; 6615 ipr_scsi_bus_speed_limit(ioa_cfg); 6616 ipr_check_term_power(ioa_cfg, mode_pages); 6617 ipr_modify_ioafp_mode_page_28(ioa_cfg, mode_pages); 6618 length = mode_pages->hdr.length + 1; 6619 mode_pages->hdr.length = 0; 6620 6621 ipr_build_mode_select(ipr_cmd, cpu_to_be32(IPR_IOA_RES_HANDLE), 0x11, 6622 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, mode_pages), 6623 length); 6624 6625 ipr_cmd->job_step = ipr_set_supported_devs; 6626 ipr_cmd->u.res = list_entry(ioa_cfg->used_res_q.next, 6627 struct ipr_resource_entry, queue); 6628 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT); 6629 6630 LEAVE; 6631 return IPR_RC_JOB_RETURN; 6632} 6633 6634/** 6635 * ipr_build_mode_sense - Builds a mode sense command 6636 * @ipr_cmd: ipr command struct 6637 * @res: resource entry struct 6638 * @parm: Byte 2 of mode sense command 6639 * @dma_addr: DMA address of mode sense buffer 6640 * @xfer_len: Size of DMA buffer 6641 * 6642 * Return value: 6643 * none 6644 **/ 6645static void ipr_build_mode_sense(struct ipr_cmnd *ipr_cmd, 6646 __be32 res_handle, 6647 u8 parm, dma_addr_t dma_addr, u8 xfer_len) 6648{ 6649 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb; 6650 6651 ioarcb->res_handle = res_handle; 6652 ioarcb->cmd_pkt.cdb[0] = MODE_SENSE; 6653 ioarcb->cmd_pkt.cdb[2] = parm; 6654 ioarcb->cmd_pkt.cdb[4] = xfer_len; 6655 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_SCSICDB; 6656 6657 ipr_init_ioadl(ipr_cmd, dma_addr, xfer_len, IPR_IOADL_FLAGS_READ_LAST); 6658} 6659 6660/** 6661 * ipr_reset_cmd_failed - Handle failure of IOA reset command 6662 * @ipr_cmd: ipr command struct 6663 * 6664 * This function handles the failure of an IOA bringup command. 6665 * 6666 * Return value: 6667 * IPR_RC_JOB_RETURN 6668 **/ 6669static int ipr_reset_cmd_failed(struct ipr_cmnd *ipr_cmd) 6670{ 6671 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 6672 u32 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc); 6673 6674 dev_err(&ioa_cfg->pdev->dev, 6675 "0x%02X failed with IOASC: 0x%08X\n", 6676 ipr_cmd->ioarcb.cmd_pkt.cdb[0], ioasc); 6677 6678 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE); 6679 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q); 6680 return IPR_RC_JOB_RETURN; 6681} 6682 6683/** 6684 * ipr_reset_mode_sense_failed - Handle failure of IOAFP mode sense 6685 * @ipr_cmd: ipr command struct 6686 * 6687 * This function handles the failure of a Mode Sense to the IOAFP. 6688 * Some adapters do not handle all mode pages. 6689 * 6690 * Return value: 6691 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN 6692 **/ 6693static int ipr_reset_mode_sense_failed(struct ipr_cmnd *ipr_cmd) 6694{ 6695 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 6696 u32 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc); 6697 6698 if (ioasc == IPR_IOASC_IR_INVALID_REQ_TYPE_OR_PKT) { 6699 ipr_cmd->job_step = ipr_set_supported_devs; 6700 ipr_cmd->u.res = list_entry(ioa_cfg->used_res_q.next, 6701 struct ipr_resource_entry, queue); 6702 return IPR_RC_JOB_CONTINUE; 6703 } 6704 6705 return ipr_reset_cmd_failed(ipr_cmd); 6706} 6707 6708/** 6709 * ipr_ioafp_mode_sense_page28 - Issue Mode Sense Page 28 to IOA 6710 * @ipr_cmd: ipr command struct 6711 * 6712 * This function send a Page 28 mode sense to the IOA to 6713 * retrieve SCSI bus attributes. 6714 * 6715 * Return value: 6716 * IPR_RC_JOB_RETURN 6717 **/ 6718static int ipr_ioafp_mode_sense_page28(struct ipr_cmnd *ipr_cmd) 6719{ 6720 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 6721 6722 ENTER; 6723 ipr_build_mode_sense(ipr_cmd, cpu_to_be32(IPR_IOA_RES_HANDLE), 6724 0x28, ioa_cfg->vpd_cbs_dma + 6725 offsetof(struct ipr_misc_cbs, mode_pages), 6726 sizeof(struct ipr_mode_pages)); 6727 6728 ipr_cmd->job_step = ipr_ioafp_mode_select_page28; 6729 ipr_cmd->job_step_failed = ipr_reset_mode_sense_failed; 6730 6731 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT); 6732 6733 LEAVE; 6734 return IPR_RC_JOB_RETURN; 6735} 6736 6737/** 6738 * ipr_ioafp_mode_select_page24 - Issue Mode Select to IOA 6739 * @ipr_cmd: ipr command struct 6740 * 6741 * This function enables dual IOA RAID support if possible. 6742 * 6743 * Return value: 6744 * IPR_RC_JOB_RETURN 6745 **/ 6746static int ipr_ioafp_mode_select_page24(struct ipr_cmnd *ipr_cmd) 6747{ 6748 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 6749 struct ipr_mode_pages *mode_pages = &ioa_cfg->vpd_cbs->mode_pages; 6750 struct ipr_mode_page24 *mode_page; 6751 int length; 6752 6753 ENTER; 6754 mode_page = ipr_get_mode_page(mode_pages, 0x24, 6755 sizeof(struct ipr_mode_page24)); 6756 6757 if (mode_page) 6758 mode_page->flags |= IPR_ENABLE_DUAL_IOA_AF; 6759 6760 length = mode_pages->hdr.length + 1; 6761 mode_pages->hdr.length = 0; 6762 6763 ipr_build_mode_select(ipr_cmd, cpu_to_be32(IPR_IOA_RES_HANDLE), 0x11, 6764 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, mode_pages), 6765 length); 6766 6767 ipr_cmd->job_step = ipr_ioafp_mode_sense_page28; 6768 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT); 6769 6770 LEAVE; 6771 return IPR_RC_JOB_RETURN; 6772} 6773 6774/** 6775 * ipr_reset_mode_sense_page24_failed - Handle failure of IOAFP mode sense 6776 * @ipr_cmd: ipr command struct 6777 * 6778 * This function handles the failure of a Mode Sense to the IOAFP. 6779 * Some adapters do not handle all mode pages. 6780 * 6781 * Return value: 6782 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN 6783 **/ 6784static int ipr_reset_mode_sense_page24_failed(struct ipr_cmnd *ipr_cmd) 6785{ 6786 u32 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc); 6787 6788 if (ioasc == IPR_IOASC_IR_INVALID_REQ_TYPE_OR_PKT) { 6789 ipr_cmd->job_step = ipr_ioafp_mode_sense_page28; 6790 return IPR_RC_JOB_CONTINUE; 6791 } 6792 6793 return ipr_reset_cmd_failed(ipr_cmd); 6794} 6795 6796/** 6797 * ipr_ioafp_mode_sense_page24 - Issue Page 24 Mode Sense to IOA 6798 * @ipr_cmd: ipr command struct 6799 * 6800 * This function send a mode sense to the IOA to retrieve 6801 * the IOA Advanced Function Control mode page. 6802 * 6803 * Return value: 6804 * IPR_RC_JOB_RETURN 6805 **/ 6806static int ipr_ioafp_mode_sense_page24(struct ipr_cmnd *ipr_cmd) 6807{ 6808 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 6809 6810 ENTER; 6811 ipr_build_mode_sense(ipr_cmd, cpu_to_be32(IPR_IOA_RES_HANDLE), 6812 0x24, ioa_cfg->vpd_cbs_dma + 6813 offsetof(struct ipr_misc_cbs, mode_pages), 6814 sizeof(struct ipr_mode_pages)); 6815 6816 ipr_cmd->job_step = ipr_ioafp_mode_select_page24; 6817 ipr_cmd->job_step_failed = ipr_reset_mode_sense_page24_failed; 6818 6819 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT); 6820 6821 LEAVE; 6822 return IPR_RC_JOB_RETURN; 6823} 6824 6825/** 6826 * ipr_init_res_table - Initialize the resource table 6827 * @ipr_cmd: ipr command struct 6828 * 6829 * This function looks through the existing resource table, comparing 6830 * it with the config table. This function will take care of old/new 6831 * devices and schedule adding/removing them from the mid-layer 6832 * as appropriate. 6833 * 6834 * Return value: 6835 * IPR_RC_JOB_CONTINUE 6836 **/ 6837static int ipr_init_res_table(struct ipr_cmnd *ipr_cmd) 6838{ 6839 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 6840 struct ipr_resource_entry *res, *temp; 6841 struct ipr_config_table_entry_wrapper cfgtew; 6842 int entries, found, flag, i; 6843 LIST_HEAD(old_res); 6844 6845 ENTER; 6846 if (ioa_cfg->sis64) 6847 flag = ioa_cfg->u.cfg_table64->hdr64.flags; 6848 else 6849 flag = ioa_cfg->u.cfg_table->hdr.flags; 6850 6851 if (flag & IPR_UCODE_DOWNLOAD_REQ) 6852 dev_err(&ioa_cfg->pdev->dev, "Microcode download required\n"); 6853 6854 list_for_each_entry_safe(res, temp, &ioa_cfg->used_res_q, queue) 6855 list_move_tail(&res->queue, &old_res); 6856 6857 if (ioa_cfg->sis64) 6858 entries = be16_to_cpu(ioa_cfg->u.cfg_table64->hdr64.num_entries); 6859 else 6860 entries = ioa_cfg->u.cfg_table->hdr.num_entries; 6861 6862 for (i = 0; i < entries; i++) { 6863 if (ioa_cfg->sis64) 6864 cfgtew.u.cfgte64 = &ioa_cfg->u.cfg_table64->dev[i]; 6865 else 6866 cfgtew.u.cfgte = &ioa_cfg->u.cfg_table->dev[i]; 6867 found = 0; 6868 6869 list_for_each_entry_safe(res, temp, &old_res, queue) { 6870 if (ipr_is_same_device(res, &cfgtew)) { 6871 list_move_tail(&res->queue, &ioa_cfg->used_res_q); 6872 found = 1; 6873 break; 6874 } 6875 } 6876 6877 if (!found) { 6878 if (list_empty(&ioa_cfg->free_res_q)) { 6879 dev_err(&ioa_cfg->pdev->dev, "Too many devices attached\n"); 6880 break; 6881 } 6882 6883 found = 1; 6884 res = list_entry(ioa_cfg->free_res_q.next, 6885 struct ipr_resource_entry, queue); 6886 list_move_tail(&res->queue, &ioa_cfg->used_res_q); 6887 ipr_init_res_entry(res, &cfgtew); 6888 res->add_to_ml = 1; 6889 } else if (res->sdev && (ipr_is_vset_device(res) || ipr_is_scsi_disk(res))) 6890 res->sdev->allow_restart = 1; 6891 6892 if (found) 6893 ipr_update_res_entry(res, &cfgtew); 6894 } 6895 6896 list_for_each_entry_safe(res, temp, &old_res, queue) { 6897 if (res->sdev) { 6898 res->del_from_ml = 1; 6899 res->res_handle = IPR_INVALID_RES_HANDLE; 6900 list_move_tail(&res->queue, &ioa_cfg->used_res_q); 6901 } 6902 } 6903 6904 list_for_each_entry_safe(res, temp, &old_res, queue) { 6905 ipr_clear_res_target(res); 6906 list_move_tail(&res->queue, &ioa_cfg->free_res_q); 6907 } 6908 6909 if (ioa_cfg->dual_raid && ipr_dual_ioa_raid) 6910 ipr_cmd->job_step = ipr_ioafp_mode_sense_page24; 6911 else 6912 ipr_cmd->job_step = ipr_ioafp_mode_sense_page28; 6913 6914 LEAVE; 6915 return IPR_RC_JOB_CONTINUE; 6916} 6917 6918/** 6919 * ipr_ioafp_query_ioa_cfg - Send a Query IOA Config to the adapter. 6920 * @ipr_cmd: ipr command struct 6921 * 6922 * This function sends a Query IOA Configuration command 6923 * to the adapter to retrieve the IOA configuration table. 6924 * 6925 * Return value: 6926 * IPR_RC_JOB_RETURN 6927 **/ 6928static int ipr_ioafp_query_ioa_cfg(struct ipr_cmnd *ipr_cmd) 6929{ 6930 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 6931 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb; 6932 struct ipr_inquiry_page3 *ucode_vpd = &ioa_cfg->vpd_cbs->page3_data; 6933 struct ipr_inquiry_cap *cap = &ioa_cfg->vpd_cbs->cap; 6934 6935 ENTER; 6936 if (cap->cap & IPR_CAP_DUAL_IOA_RAID) 6937 ioa_cfg->dual_raid = 1; 6938 dev_info(&ioa_cfg->pdev->dev, "Adapter firmware version: %02X%02X%02X%02X\n", 6939 ucode_vpd->major_release, ucode_vpd->card_type, 6940 ucode_vpd->minor_release[0], ucode_vpd->minor_release[1]); 6941 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_IOACMD; 6942 ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE); 6943 6944 ioarcb->cmd_pkt.cdb[0] = IPR_QUERY_IOA_CONFIG; 6945 ioarcb->cmd_pkt.cdb[6] = (ioa_cfg->cfg_table_size >> 16) & 0xff; 6946 ioarcb->cmd_pkt.cdb[7] = (ioa_cfg->cfg_table_size >> 8) & 0xff; 6947 ioarcb->cmd_pkt.cdb[8] = ioa_cfg->cfg_table_size & 0xff; 6948 6949 ipr_init_ioadl(ipr_cmd, ioa_cfg->cfg_table_dma, ioa_cfg->cfg_table_size, 6950 IPR_IOADL_FLAGS_READ_LAST); 6951 6952 ipr_cmd->job_step = ipr_init_res_table; 6953 6954 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT); 6955 6956 LEAVE; 6957 return IPR_RC_JOB_RETURN; 6958} 6959 6960/** 6961 * ipr_ioafp_inquiry - Send an Inquiry to the adapter. 6962 * @ipr_cmd: ipr command struct 6963 * 6964 * This utility function sends an inquiry to the adapter. 6965 * 6966 * Return value: 6967 * none 6968 **/ 6969static void ipr_ioafp_inquiry(struct ipr_cmnd *ipr_cmd, u8 flags, u8 page, 6970 dma_addr_t dma_addr, u8 xfer_len) 6971{ 6972 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb; 6973 6974 ENTER; 6975 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_SCSICDB; 6976 ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE); 6977 6978 ioarcb->cmd_pkt.cdb[0] = INQUIRY; 6979 ioarcb->cmd_pkt.cdb[1] = flags; 6980 ioarcb->cmd_pkt.cdb[2] = page; 6981 ioarcb->cmd_pkt.cdb[4] = xfer_len; 6982 6983 ipr_init_ioadl(ipr_cmd, dma_addr, xfer_len, IPR_IOADL_FLAGS_READ_LAST); 6984 6985 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT); 6986 LEAVE; 6987} 6988 6989/** 6990 * ipr_inquiry_page_supported - Is the given inquiry page supported 6991 * @page0: inquiry page 0 buffer 6992 * @page: page code. 6993 * 6994 * This function determines if the specified inquiry page is supported. 6995 * 6996 * Return value: 6997 * 1 if page is supported / 0 if not 6998 **/ 6999static int ipr_inquiry_page_supported(struct ipr_inquiry_page0 *page0, u8 page) 7000{ 7001 int i; 7002 7003 for (i = 0; i < min_t(u8, page0->len, IPR_INQUIRY_PAGE0_ENTRIES); i++) 7004 if (page0->page[i] == page) 7005 return 1; 7006 7007 return 0; 7008} 7009 7010/** 7011 * ipr_ioafp_cap_inquiry - Send a Page 0xD0 Inquiry to the adapter. 7012 * @ipr_cmd: ipr command struct 7013 * 7014 * This function sends a Page 0xD0 inquiry to the adapter 7015 * to retrieve adapter capabilities. 7016 * 7017 * Return value: 7018 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN 7019 **/ 7020static int ipr_ioafp_cap_inquiry(struct ipr_cmnd *ipr_cmd) 7021{ 7022 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 7023 struct ipr_inquiry_page0 *page0 = &ioa_cfg->vpd_cbs->page0_data; 7024 struct ipr_inquiry_cap *cap = &ioa_cfg->vpd_cbs->cap; 7025 7026 ENTER; 7027 ipr_cmd->job_step = ipr_ioafp_query_ioa_cfg; 7028 memset(cap, 0, sizeof(*cap)); 7029 7030 if (ipr_inquiry_page_supported(page0, 0xD0)) { 7031 ipr_ioafp_inquiry(ipr_cmd, 1, 0xD0, 7032 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, cap), 7033 sizeof(struct ipr_inquiry_cap)); 7034 return IPR_RC_JOB_RETURN; 7035 } 7036 7037 LEAVE; 7038 return IPR_RC_JOB_CONTINUE; 7039} 7040 7041/** 7042 * ipr_ioafp_page3_inquiry - Send a Page 3 Inquiry to the adapter. 7043 * @ipr_cmd: ipr command struct 7044 * 7045 * This function sends a Page 3 inquiry to the adapter 7046 * to retrieve software VPD information. 7047 * 7048 * Return value: 7049 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN 7050 **/ 7051static int ipr_ioafp_page3_inquiry(struct ipr_cmnd *ipr_cmd) 7052{ 7053 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 7054 7055 ENTER; 7056 7057 ipr_cmd->job_step = ipr_ioafp_cap_inquiry; 7058 7059 ipr_ioafp_inquiry(ipr_cmd, 1, 3, 7060 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, page3_data), 7061 sizeof(struct ipr_inquiry_page3)); 7062 7063 LEAVE; 7064 return IPR_RC_JOB_RETURN; 7065} 7066 7067/** 7068 * ipr_ioafp_page0_inquiry - Send a Page 0 Inquiry to the adapter. 7069 * @ipr_cmd: ipr command struct 7070 * 7071 * This function sends a Page 0 inquiry to the adapter 7072 * to retrieve supported inquiry pages. 7073 * 7074 * Return value: 7075 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN 7076 **/ 7077static int ipr_ioafp_page0_inquiry(struct ipr_cmnd *ipr_cmd) 7078{ 7079 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 7080 char type[5]; 7081 7082 ENTER; 7083 7084 /* Grab the type out of the VPD and store it away */ 7085 memcpy(type, ioa_cfg->vpd_cbs->ioa_vpd.std_inq_data.vpids.product_id, 4); 7086 type[4] = '\0'; 7087 ioa_cfg->type = simple_strtoul((char *)type, NULL, 16); 7088 7089 ipr_cmd->job_step = ipr_ioafp_page3_inquiry; 7090 7091 ipr_ioafp_inquiry(ipr_cmd, 1, 0, 7092 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, page0_data), 7093 sizeof(struct ipr_inquiry_page0)); 7094 7095 LEAVE; 7096 return IPR_RC_JOB_RETURN; 7097} 7098 7099/** 7100 * ipr_ioafp_std_inquiry - Send a Standard Inquiry to the adapter. 7101 * @ipr_cmd: ipr command struct 7102 * 7103 * This function sends a standard inquiry to the adapter. 7104 * 7105 * Return value: 7106 * IPR_RC_JOB_RETURN 7107 **/ 7108static int ipr_ioafp_std_inquiry(struct ipr_cmnd *ipr_cmd) 7109{ 7110 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 7111 7112 ENTER; 7113 ipr_cmd->job_step = ipr_ioafp_page0_inquiry; 7114 7115 ipr_ioafp_inquiry(ipr_cmd, 0, 0, 7116 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, ioa_vpd), 7117 sizeof(struct ipr_ioa_vpd)); 7118 7119 LEAVE; 7120 return IPR_RC_JOB_RETURN; 7121} 7122 7123/** 7124 * ipr_ioafp_identify_hrrq - Send Identify Host RRQ. 7125 * @ipr_cmd: ipr command struct 7126 * 7127 * This function send an Identify Host Request Response Queue 7128 * command to establish the HRRQ with the adapter. 7129 * 7130 * Return value: 7131 * IPR_RC_JOB_RETURN 7132 **/ 7133static int ipr_ioafp_identify_hrrq(struct ipr_cmnd *ipr_cmd) 7134{ 7135 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 7136 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb; 7137 7138 ENTER; 7139 dev_info(&ioa_cfg->pdev->dev, "Starting IOA initialization sequence.\n"); 7140 7141 ioarcb->cmd_pkt.cdb[0] = IPR_ID_HOST_RR_Q; 7142 ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE); 7143 7144 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_IOACMD; 7145 if (ioa_cfg->sis64) 7146 ioarcb->cmd_pkt.cdb[1] = 0x1; 7147 ioarcb->cmd_pkt.cdb[2] = 7148 ((u64) ioa_cfg->host_rrq_dma >> 24) & 0xff; 7149 ioarcb->cmd_pkt.cdb[3] = 7150 ((u64) ioa_cfg->host_rrq_dma >> 16) & 0xff; 7151 ioarcb->cmd_pkt.cdb[4] = 7152 ((u64) ioa_cfg->host_rrq_dma >> 8) & 0xff; 7153 ioarcb->cmd_pkt.cdb[5] = 7154 ((u64) ioa_cfg->host_rrq_dma) & 0xff; 7155 ioarcb->cmd_pkt.cdb[7] = 7156 ((sizeof(u32) * IPR_NUM_CMD_BLKS) >> 8) & 0xff; 7157 ioarcb->cmd_pkt.cdb[8] = 7158 (sizeof(u32) * IPR_NUM_CMD_BLKS) & 0xff; 7159 7160 if (ioa_cfg->sis64) { 7161 ioarcb->cmd_pkt.cdb[10] = 7162 ((u64) ioa_cfg->host_rrq_dma >> 56) & 0xff; 7163 ioarcb->cmd_pkt.cdb[11] = 7164 ((u64) ioa_cfg->host_rrq_dma >> 48) & 0xff; 7165 ioarcb->cmd_pkt.cdb[12] = 7166 ((u64) ioa_cfg->host_rrq_dma >> 40) & 0xff; 7167 ioarcb->cmd_pkt.cdb[13] = 7168 ((u64) ioa_cfg->host_rrq_dma >> 32) & 0xff; 7169 } 7170 7171 ipr_cmd->job_step = ipr_ioafp_std_inquiry; 7172 7173 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT); 7174 7175 LEAVE; 7176 return IPR_RC_JOB_RETURN; 7177} 7178 7179/** 7180 * ipr_reset_timer_done - Adapter reset timer function 7181 * @ipr_cmd: ipr command struct 7182 * 7183 * Description: This function is used in adapter reset processing 7184 * for timing events. If the reset_cmd pointer in the IOA 7185 * config struct is not this adapter's we are doing nested 7186 * resets and fail_all_ops will take care of freeing the 7187 * command block. 7188 * 7189 * Return value: 7190 * none 7191 **/ 7192static void ipr_reset_timer_done(struct ipr_cmnd *ipr_cmd) 7193{ 7194 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 7195 unsigned long lock_flags = 0; 7196 7197 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 7198 7199 if (ioa_cfg->reset_cmd == ipr_cmd) { 7200 list_del(&ipr_cmd->queue); 7201 ipr_cmd->done(ipr_cmd); 7202 } 7203 7204 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 7205} 7206 7207/** 7208 * ipr_reset_start_timer - Start a timer for adapter reset job 7209 * @ipr_cmd: ipr command struct 7210 * @timeout: timeout value 7211 * 7212 * Description: This function is used in adapter reset processing 7213 * for timing events. If the reset_cmd pointer in the IOA 7214 * config struct is not this adapter's we are doing nested 7215 * resets and fail_all_ops will take care of freeing the 7216 * command block. 7217 * 7218 * Return value: 7219 * none 7220 **/ 7221static void ipr_reset_start_timer(struct ipr_cmnd *ipr_cmd, 7222 unsigned long timeout) 7223{ 7224 list_add_tail(&ipr_cmd->queue, &ipr_cmd->ioa_cfg->pending_q); 7225 ipr_cmd->done = ipr_reset_ioa_job; 7226 7227 ipr_cmd->timer.data = (unsigned long) ipr_cmd; 7228 ipr_cmd->timer.expires = jiffies + timeout; 7229 ipr_cmd->timer.function = (void (*)(unsigned long))ipr_reset_timer_done; 7230 add_timer(&ipr_cmd->timer); 7231} 7232 7233/** 7234 * ipr_init_ioa_mem - Initialize ioa_cfg control block 7235 * @ioa_cfg: ioa cfg struct 7236 * 7237 * Return value: 7238 * nothing 7239 **/ 7240static void ipr_init_ioa_mem(struct ipr_ioa_cfg *ioa_cfg) 7241{ 7242 memset(ioa_cfg->host_rrq, 0, sizeof(u32) * IPR_NUM_CMD_BLKS); 7243 7244 /* Initialize Host RRQ pointers */ 7245 ioa_cfg->hrrq_start = ioa_cfg->host_rrq; 7246 ioa_cfg->hrrq_end = &ioa_cfg->host_rrq[IPR_NUM_CMD_BLKS - 1]; 7247 ioa_cfg->hrrq_curr = ioa_cfg->hrrq_start; 7248 ioa_cfg->toggle_bit = 1; 7249 7250 /* Zero out config table */ 7251 memset(ioa_cfg->u.cfg_table, 0, ioa_cfg->cfg_table_size); 7252} 7253 7254/** 7255 * ipr_reset_next_stage - Process IPL stage change based on feedback register. 7256 * @ipr_cmd: ipr command struct 7257 * 7258 * Return value: 7259 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN 7260 **/ 7261static int ipr_reset_next_stage(struct ipr_cmnd *ipr_cmd) 7262{ 7263 unsigned long stage, stage_time; 7264 u32 feedback; 7265 volatile u32 int_reg; 7266 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 7267 u64 maskval = 0; 7268 7269 feedback = readl(ioa_cfg->regs.init_feedback_reg); 7270 stage = feedback & IPR_IPL_INIT_STAGE_MASK; 7271 stage_time = feedback & IPR_IPL_INIT_STAGE_TIME_MASK; 7272 7273 ipr_dbg("IPL stage = 0x%lx, IPL stage time = %ld\n", stage, stage_time); 7274 7275 /* sanity check the stage_time value */ 7276 if (stage_time == 0) 7277 stage_time = IPR_IPL_INIT_DEFAULT_STAGE_TIME; 7278 else if (stage_time < IPR_IPL_INIT_MIN_STAGE_TIME) 7279 stage_time = IPR_IPL_INIT_MIN_STAGE_TIME; 7280 else if (stage_time > IPR_LONG_OPERATIONAL_TIMEOUT) 7281 stage_time = IPR_LONG_OPERATIONAL_TIMEOUT; 7282 7283 if (stage == IPR_IPL_INIT_STAGE_UNKNOWN) { 7284 writel(IPR_PCII_IPL_STAGE_CHANGE, ioa_cfg->regs.set_interrupt_mask_reg); 7285 int_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg); 7286 stage_time = ioa_cfg->transop_timeout; 7287 ipr_cmd->job_step = ipr_ioafp_identify_hrrq; 7288 } else if (stage == IPR_IPL_INIT_STAGE_TRANSOP) { 7289 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg32); 7290 if (int_reg & IPR_PCII_IOA_TRANS_TO_OPER) { 7291 ipr_cmd->job_step = ipr_ioafp_identify_hrrq; 7292 maskval = IPR_PCII_IPL_STAGE_CHANGE; 7293 maskval = (maskval << 32) | IPR_PCII_IOA_TRANS_TO_OPER; 7294 writeq(maskval, ioa_cfg->regs.set_interrupt_mask_reg); 7295 int_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg); 7296 return IPR_RC_JOB_CONTINUE; 7297 } 7298 } 7299 7300 ipr_cmd->timer.data = (unsigned long) ipr_cmd; 7301 ipr_cmd->timer.expires = jiffies + stage_time * HZ; 7302 ipr_cmd->timer.function = (void (*)(unsigned long))ipr_oper_timeout; 7303 ipr_cmd->done = ipr_reset_ioa_job; 7304 add_timer(&ipr_cmd->timer); 7305 list_add_tail(&ipr_cmd->queue, &ioa_cfg->pending_q); 7306 7307 return IPR_RC_JOB_RETURN; 7308} 7309 7310/** 7311 * ipr_reset_enable_ioa - Enable the IOA following a reset. 7312 * @ipr_cmd: ipr command struct 7313 * 7314 * This function reinitializes some control blocks and 7315 * enables destructive diagnostics on the adapter. 7316 * 7317 * Return value: 7318 * IPR_RC_JOB_RETURN 7319 **/ 7320static int ipr_reset_enable_ioa(struct ipr_cmnd *ipr_cmd) 7321{ 7322 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 7323 volatile u32 int_reg; 7324 volatile u64 maskval; 7325 7326 ENTER; 7327 ipr_cmd->job_step = ipr_ioafp_identify_hrrq; 7328 ipr_init_ioa_mem(ioa_cfg); 7329 7330 ioa_cfg->allow_interrupts = 1; 7331 if (ioa_cfg->sis64) { 7332 /* Set the adapter to the correct endian mode. */ 7333 writel(IPR_ENDIAN_SWAP_KEY, ioa_cfg->regs.endian_swap_reg); 7334 int_reg = readl(ioa_cfg->regs.endian_swap_reg); 7335 } 7336 7337 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg32); 7338 7339 if (int_reg & IPR_PCII_IOA_TRANS_TO_OPER) { 7340 writel((IPR_PCII_ERROR_INTERRUPTS | IPR_PCII_HRRQ_UPDATED), 7341 ioa_cfg->regs.clr_interrupt_mask_reg32); 7342 int_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg); 7343 return IPR_RC_JOB_CONTINUE; 7344 } 7345 7346 /* Enable destructive diagnostics on IOA */ 7347 writel(ioa_cfg->doorbell, ioa_cfg->regs.set_uproc_interrupt_reg32); 7348 7349 if (ioa_cfg->sis64) { 7350 maskval = IPR_PCII_IPL_STAGE_CHANGE; 7351 maskval = (maskval << 32) | IPR_PCII_OPER_INTERRUPTS; 7352 writeq(maskval, ioa_cfg->regs.clr_interrupt_mask_reg); 7353 } else 7354 writel(IPR_PCII_OPER_INTERRUPTS, ioa_cfg->regs.clr_interrupt_mask_reg32); 7355 7356 int_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg); 7357 7358 dev_info(&ioa_cfg->pdev->dev, "Initializing IOA.\n"); 7359 7360 if (ioa_cfg->sis64) { 7361 ipr_cmd->job_step = ipr_reset_next_stage; 7362 return IPR_RC_JOB_CONTINUE; 7363 } 7364 7365 ipr_cmd->timer.data = (unsigned long) ipr_cmd; 7366 ipr_cmd->timer.expires = jiffies + (ioa_cfg->transop_timeout * HZ); 7367 ipr_cmd->timer.function = (void (*)(unsigned long))ipr_oper_timeout; 7368 ipr_cmd->done = ipr_reset_ioa_job; 7369 add_timer(&ipr_cmd->timer); 7370 list_add_tail(&ipr_cmd->queue, &ioa_cfg->pending_q); 7371 7372 LEAVE; 7373 return IPR_RC_JOB_RETURN; 7374} 7375 7376/** 7377 * ipr_reset_wait_for_dump - Wait for a dump to timeout. 7378 * @ipr_cmd: ipr command struct 7379 * 7380 * This function is invoked when an adapter dump has run out 7381 * of processing time. 7382 * 7383 * Return value: 7384 * IPR_RC_JOB_CONTINUE 7385 **/ 7386static int ipr_reset_wait_for_dump(struct ipr_cmnd *ipr_cmd) 7387{ 7388 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 7389 7390 if (ioa_cfg->sdt_state == GET_DUMP) 7391 ioa_cfg->sdt_state = ABORT_DUMP; 7392 7393 ipr_cmd->job_step = ipr_reset_alert; 7394 7395 return IPR_RC_JOB_CONTINUE; 7396} 7397 7398/** 7399 * ipr_unit_check_no_data - Log a unit check/no data error log 7400 * @ioa_cfg: ioa config struct 7401 * 7402 * Logs an error indicating the adapter unit checked, but for some 7403 * reason, we were unable to fetch the unit check buffer. 7404 * 7405 * Return value: 7406 * nothing 7407 **/ 7408static void ipr_unit_check_no_data(struct ipr_ioa_cfg *ioa_cfg) 7409{ 7410 ioa_cfg->errors_logged++; 7411 dev_err(&ioa_cfg->pdev->dev, "IOA unit check with no data\n"); 7412} 7413 7414/** 7415 * ipr_get_unit_check_buffer - Get the unit check buffer from the IOA 7416 * @ioa_cfg: ioa config struct 7417 * 7418 * Fetches the unit check buffer from the adapter by clocking the data 7419 * through the mailbox register. 7420 * 7421 * Return value: 7422 * nothing 7423 **/ 7424static void ipr_get_unit_check_buffer(struct ipr_ioa_cfg *ioa_cfg) 7425{ 7426 unsigned long mailbox; 7427 struct ipr_hostrcb *hostrcb; 7428 struct ipr_uc_sdt sdt; 7429 int rc, length; 7430 u32 ioasc; 7431 7432 mailbox = readl(ioa_cfg->ioa_mailbox); 7433 7434 if (!ioa_cfg->sis64 && !ipr_sdt_is_fmt2(mailbox)) { 7435 ipr_unit_check_no_data(ioa_cfg); 7436 return; 7437 } 7438 7439 memset(&sdt, 0, sizeof(struct ipr_uc_sdt)); 7440 rc = ipr_get_ldump_data_section(ioa_cfg, mailbox, (__be32 *) &sdt, 7441 (sizeof(struct ipr_uc_sdt)) / sizeof(__be32)); 7442 7443 if (rc || !(sdt.entry[0].flags & IPR_SDT_VALID_ENTRY) || 7444 ((be32_to_cpu(sdt.hdr.state) != IPR_FMT3_SDT_READY_TO_USE) && 7445 (be32_to_cpu(sdt.hdr.state) != IPR_FMT2_SDT_READY_TO_USE))) { 7446 ipr_unit_check_no_data(ioa_cfg); 7447 return; 7448 } 7449 7450 /* Find length of the first sdt entry (UC buffer) */ 7451 if (be32_to_cpu(sdt.hdr.state) == IPR_FMT3_SDT_READY_TO_USE) 7452 length = be32_to_cpu(sdt.entry[0].end_token); 7453 else 7454 length = (be32_to_cpu(sdt.entry[0].end_token) - 7455 be32_to_cpu(sdt.entry[0].start_token)) & 7456 IPR_FMT2_MBX_ADDR_MASK; 7457 7458 hostrcb = list_entry(ioa_cfg->hostrcb_free_q.next, 7459 struct ipr_hostrcb, queue); 7460 list_del(&hostrcb->queue); 7461 memset(&hostrcb->hcam, 0, sizeof(hostrcb->hcam)); 7462 7463 rc = ipr_get_ldump_data_section(ioa_cfg, 7464 be32_to_cpu(sdt.entry[0].start_token), 7465 (__be32 *)&hostrcb->hcam, 7466 min(length, (int)sizeof(hostrcb->hcam)) / sizeof(__be32)); 7467 7468 if (!rc) { 7469 ipr_handle_log_data(ioa_cfg, hostrcb); 7470 ioasc = be32_to_cpu(hostrcb->hcam.u.error.fd_ioasc); 7471 if (ioasc == IPR_IOASC_NR_IOA_RESET_REQUIRED && 7472 ioa_cfg->sdt_state == GET_DUMP) 7473 ioa_cfg->sdt_state = WAIT_FOR_DUMP; 7474 } else 7475 ipr_unit_check_no_data(ioa_cfg); 7476 7477 list_add_tail(&hostrcb->queue, &ioa_cfg->hostrcb_free_q); 7478} 7479 7480/** 7481 * ipr_reset_get_unit_check_job - Call to get the unit check buffer. 7482 * @ipr_cmd: ipr command struct 7483 * 7484 * Description: This function will call to get the unit check buffer. 7485 * 7486 * Return value: 7487 * IPR_RC_JOB_RETURN 7488 **/ 7489static int ipr_reset_get_unit_check_job(struct ipr_cmnd *ipr_cmd) 7490{ 7491 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 7492 7493 ENTER; 7494 ioa_cfg->ioa_unit_checked = 0; 7495 ipr_get_unit_check_buffer(ioa_cfg); 7496 ipr_cmd->job_step = ipr_reset_alert; 7497 ipr_reset_start_timer(ipr_cmd, 0); 7498 7499 LEAVE; 7500 return IPR_RC_JOB_RETURN; 7501} 7502 7503/** 7504 * ipr_reset_restore_cfg_space - Restore PCI config space. 7505 * @ipr_cmd: ipr command struct 7506 * 7507 * Description: This function restores the saved PCI config space of 7508 * the adapter, fails all outstanding ops back to the callers, and 7509 * fetches the dump/unit check if applicable to this reset. 7510 * 7511 * Return value: 7512 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN 7513 **/ 7514static int ipr_reset_restore_cfg_space(struct ipr_cmnd *ipr_cmd) 7515{ 7516 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 7517 volatile u32 int_reg; 7518 7519 ENTER; 7520 ioa_cfg->pdev->state_saved = true; 7521 pci_restore_state(ioa_cfg->pdev); 7522 7523 if (ipr_set_pcix_cmd_reg(ioa_cfg)) { 7524 ipr_cmd->s.ioasa.hdr.ioasc = cpu_to_be32(IPR_IOASC_PCI_ACCESS_ERROR); 7525 return IPR_RC_JOB_CONTINUE; 7526 } 7527 7528 ipr_fail_all_ops(ioa_cfg); 7529 7530 if (ioa_cfg->sis64) { 7531 /* Set the adapter to the correct endian mode. */ 7532 writel(IPR_ENDIAN_SWAP_KEY, ioa_cfg->regs.endian_swap_reg); 7533 int_reg = readl(ioa_cfg->regs.endian_swap_reg); 7534 } 7535 7536 if (ioa_cfg->ioa_unit_checked) { 7537 if (ioa_cfg->sis64) { 7538 ipr_cmd->job_step = ipr_reset_get_unit_check_job; 7539 ipr_reset_start_timer(ipr_cmd, IPR_DUMP_DELAY_TIMEOUT); 7540 return IPR_RC_JOB_RETURN; 7541 } else { 7542 ioa_cfg->ioa_unit_checked = 0; 7543 ipr_get_unit_check_buffer(ioa_cfg); 7544 ipr_cmd->job_step = ipr_reset_alert; 7545 ipr_reset_start_timer(ipr_cmd, 0); 7546 return IPR_RC_JOB_RETURN; 7547 } 7548 } 7549 7550 if (ioa_cfg->in_ioa_bringdown) { 7551 ipr_cmd->job_step = ipr_ioa_bringdown_done; 7552 } else { 7553 ipr_cmd->job_step = ipr_reset_enable_ioa; 7554 7555 if (GET_DUMP == ioa_cfg->sdt_state) { 7556 ipr_reset_start_timer(ipr_cmd, IPR_DUMP_TIMEOUT); 7557 ipr_cmd->job_step = ipr_reset_wait_for_dump; 7558 schedule_work(&ioa_cfg->work_q); 7559 return IPR_RC_JOB_RETURN; 7560 } 7561 } 7562 7563 LEAVE; 7564 return IPR_RC_JOB_CONTINUE; 7565} 7566 7567/** 7568 * ipr_reset_bist_done - BIST has completed on the adapter. 7569 * @ipr_cmd: ipr command struct 7570 * 7571 * Description: Unblock config space and resume the reset process. 7572 * 7573 * Return value: 7574 * IPR_RC_JOB_CONTINUE 7575 **/ 7576static int ipr_reset_bist_done(struct ipr_cmnd *ipr_cmd) 7577{ 7578 ENTER; 7579 pci_unblock_user_cfg_access(ipr_cmd->ioa_cfg->pdev); 7580 ipr_cmd->job_step = ipr_reset_restore_cfg_space; 7581 LEAVE; 7582 return IPR_RC_JOB_CONTINUE; 7583} 7584 7585/** 7586 * ipr_reset_start_bist - Run BIST on the adapter. 7587 * @ipr_cmd: ipr command struct 7588 * 7589 * Description: This function runs BIST on the adapter, then delays 2 seconds. 7590 * 7591 * Return value: 7592 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN 7593 **/ 7594static int ipr_reset_start_bist(struct ipr_cmnd *ipr_cmd) 7595{ 7596 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 7597 int rc = PCIBIOS_SUCCESSFUL; 7598 7599 ENTER; 7600 pci_block_user_cfg_access(ioa_cfg->pdev); 7601 7602 if (ioa_cfg->ipr_chip->bist_method == IPR_MMIO) 7603 writel(IPR_UPROCI_SIS64_START_BIST, 7604 ioa_cfg->regs.set_uproc_interrupt_reg32); 7605 else 7606 rc = pci_write_config_byte(ioa_cfg->pdev, PCI_BIST, PCI_BIST_START); 7607 7608 if (rc == PCIBIOS_SUCCESSFUL) { 7609 ipr_cmd->job_step = ipr_reset_bist_done; 7610 ipr_reset_start_timer(ipr_cmd, IPR_WAIT_FOR_BIST_TIMEOUT); 7611 rc = IPR_RC_JOB_RETURN; 7612 } else { 7613 pci_unblock_user_cfg_access(ipr_cmd->ioa_cfg->pdev); 7614 ipr_cmd->s.ioasa.hdr.ioasc = cpu_to_be32(IPR_IOASC_PCI_ACCESS_ERROR); 7615 rc = IPR_RC_JOB_CONTINUE; 7616 } 7617 7618 LEAVE; 7619 return rc; 7620} 7621 7622/** 7623 * ipr_reset_slot_reset_done - Clear PCI reset to the adapter 7624 * @ipr_cmd: ipr command struct 7625 * 7626 * Description: This clears PCI reset to the adapter and delays two seconds. 7627 * 7628 * Return value: 7629 * IPR_RC_JOB_RETURN 7630 **/ 7631static int ipr_reset_slot_reset_done(struct ipr_cmnd *ipr_cmd) 7632{ 7633 ENTER; 7634 pci_set_pcie_reset_state(ipr_cmd->ioa_cfg->pdev, pcie_deassert_reset); 7635 ipr_cmd->job_step = ipr_reset_bist_done; 7636 ipr_reset_start_timer(ipr_cmd, IPR_WAIT_FOR_BIST_TIMEOUT); 7637 LEAVE; 7638 return IPR_RC_JOB_RETURN; 7639} 7640 7641/** 7642 * ipr_reset_slot_reset - Reset the PCI slot of the adapter. 7643 * @ipr_cmd: ipr command struct 7644 * 7645 * Description: This asserts PCI reset to the adapter. 7646 * 7647 * Return value: 7648 * IPR_RC_JOB_RETURN 7649 **/ 7650static int ipr_reset_slot_reset(struct ipr_cmnd *ipr_cmd) 7651{ 7652 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 7653 struct pci_dev *pdev = ioa_cfg->pdev; 7654 7655 ENTER; 7656 pci_block_user_cfg_access(pdev); 7657 pci_set_pcie_reset_state(pdev, pcie_warm_reset); 7658 ipr_cmd->job_step = ipr_reset_slot_reset_done; 7659 ipr_reset_start_timer(ipr_cmd, IPR_PCI_RESET_TIMEOUT); 7660 LEAVE; 7661 return IPR_RC_JOB_RETURN; 7662} 7663 7664/** 7665 * ipr_reset_allowed - Query whether or not IOA can be reset 7666 * @ioa_cfg: ioa config struct 7667 * 7668 * Return value: 7669 * 0 if reset not allowed / non-zero if reset is allowed 7670 **/ 7671static int ipr_reset_allowed(struct ipr_ioa_cfg *ioa_cfg) 7672{ 7673 volatile u32 temp_reg; 7674 7675 temp_reg = readl(ioa_cfg->regs.sense_interrupt_reg); 7676 return ((temp_reg & IPR_PCII_CRITICAL_OPERATION) == 0); 7677} 7678 7679/** 7680 * ipr_reset_wait_to_start_bist - Wait for permission to reset IOA. 7681 * @ipr_cmd: ipr command struct 7682 * 7683 * Description: This function waits for adapter permission to run BIST, 7684 * then runs BIST. If the adapter does not give permission after a 7685 * reasonable time, we will reset the adapter anyway. The impact of 7686 * resetting the adapter without warning the adapter is the risk of 7687 * losing the persistent error log on the adapter. If the adapter is 7688 * reset while it is writing to the flash on the adapter, the flash 7689 * segment will have bad ECC and be zeroed. 7690 * 7691 * Return value: 7692 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN 7693 **/ 7694static int ipr_reset_wait_to_start_bist(struct ipr_cmnd *ipr_cmd) 7695{ 7696 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 7697 int rc = IPR_RC_JOB_RETURN; 7698 7699 if (!ipr_reset_allowed(ioa_cfg) && ipr_cmd->u.time_left) { 7700 ipr_cmd->u.time_left -= IPR_CHECK_FOR_RESET_TIMEOUT; 7701 ipr_reset_start_timer(ipr_cmd, IPR_CHECK_FOR_RESET_TIMEOUT); 7702 } else { 7703 ipr_cmd->job_step = ioa_cfg->reset; 7704 rc = IPR_RC_JOB_CONTINUE; 7705 } 7706 7707 return rc; 7708} 7709 7710/** 7711 * ipr_reset_alert - Alert the adapter of a pending reset 7712 * @ipr_cmd: ipr command struct 7713 * 7714 * Description: This function alerts the adapter that it will be reset. 7715 * If memory space is not currently enabled, proceed directly 7716 * to running BIST on the adapter. The timer must always be started 7717 * so we guarantee we do not run BIST from ipr_isr. 7718 * 7719 * Return value: 7720 * IPR_RC_JOB_RETURN 7721 **/ 7722static int ipr_reset_alert(struct ipr_cmnd *ipr_cmd) 7723{ 7724 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 7725 u16 cmd_reg; 7726 int rc; 7727 7728 ENTER; 7729 rc = pci_read_config_word(ioa_cfg->pdev, PCI_COMMAND, &cmd_reg); 7730 7731 if ((rc == PCIBIOS_SUCCESSFUL) && (cmd_reg & PCI_COMMAND_MEMORY)) { 7732 ipr_mask_and_clear_interrupts(ioa_cfg, ~0); 7733 writel(IPR_UPROCI_RESET_ALERT, ioa_cfg->regs.set_uproc_interrupt_reg32); 7734 ipr_cmd->job_step = ipr_reset_wait_to_start_bist; 7735 } else { 7736 ipr_cmd->job_step = ioa_cfg->reset; 7737 } 7738 7739 ipr_cmd->u.time_left = IPR_WAIT_FOR_RESET_TIMEOUT; 7740 ipr_reset_start_timer(ipr_cmd, IPR_CHECK_FOR_RESET_TIMEOUT); 7741 7742 LEAVE; 7743 return IPR_RC_JOB_RETURN; 7744} 7745 7746/** 7747 * ipr_reset_ucode_download_done - Microcode download completion 7748 * @ipr_cmd: ipr command struct 7749 * 7750 * Description: This function unmaps the microcode download buffer. 7751 * 7752 * Return value: 7753 * IPR_RC_JOB_CONTINUE 7754 **/ 7755static int ipr_reset_ucode_download_done(struct ipr_cmnd *ipr_cmd) 7756{ 7757 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 7758 struct ipr_sglist *sglist = ioa_cfg->ucode_sglist; 7759 7760 pci_unmap_sg(ioa_cfg->pdev, sglist->scatterlist, 7761 sglist->num_sg, DMA_TO_DEVICE); 7762 7763 ipr_cmd->job_step = ipr_reset_alert; 7764 return IPR_RC_JOB_CONTINUE; 7765} 7766 7767/** 7768 * ipr_reset_ucode_download - Download microcode to the adapter 7769 * @ipr_cmd: ipr command struct 7770 * 7771 * Description: This function checks to see if it there is microcode 7772 * to download to the adapter. If there is, a download is performed. 7773 * 7774 * Return value: 7775 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN 7776 **/ 7777static int ipr_reset_ucode_download(struct ipr_cmnd *ipr_cmd) 7778{ 7779 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 7780 struct ipr_sglist *sglist = ioa_cfg->ucode_sglist; 7781 7782 ENTER; 7783 ipr_cmd->job_step = ipr_reset_alert; 7784 7785 if (!sglist) 7786 return IPR_RC_JOB_CONTINUE; 7787 7788 ipr_cmd->ioarcb.res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE); 7789 ipr_cmd->ioarcb.cmd_pkt.request_type = IPR_RQTYPE_SCSICDB; 7790 ipr_cmd->ioarcb.cmd_pkt.cdb[0] = WRITE_BUFFER; 7791 ipr_cmd->ioarcb.cmd_pkt.cdb[1] = IPR_WR_BUF_DOWNLOAD_AND_SAVE; 7792 ipr_cmd->ioarcb.cmd_pkt.cdb[6] = (sglist->buffer_len & 0xff0000) >> 16; 7793 ipr_cmd->ioarcb.cmd_pkt.cdb[7] = (sglist->buffer_len & 0x00ff00) >> 8; 7794 ipr_cmd->ioarcb.cmd_pkt.cdb[8] = sglist->buffer_len & 0x0000ff; 7795 7796 if (ioa_cfg->sis64) 7797 ipr_build_ucode_ioadl64(ipr_cmd, sglist); 7798 else 7799 ipr_build_ucode_ioadl(ipr_cmd, sglist); 7800 ipr_cmd->job_step = ipr_reset_ucode_download_done; 7801 7802 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, 7803 IPR_WRITE_BUFFER_TIMEOUT); 7804 7805 LEAVE; 7806 return IPR_RC_JOB_RETURN; 7807} 7808 7809/** 7810 * ipr_reset_shutdown_ioa - Shutdown the adapter 7811 * @ipr_cmd: ipr command struct 7812 * 7813 * Description: This function issues an adapter shutdown of the 7814 * specified type to the specified adapter as part of the 7815 * adapter reset job. 7816 * 7817 * Return value: 7818 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN 7819 **/ 7820static int ipr_reset_shutdown_ioa(struct ipr_cmnd *ipr_cmd) 7821{ 7822 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 7823 enum ipr_shutdown_type shutdown_type = ipr_cmd->u.shutdown_type; 7824 unsigned long timeout; 7825 int rc = IPR_RC_JOB_CONTINUE; 7826 7827 ENTER; 7828 if (shutdown_type != IPR_SHUTDOWN_NONE && !ioa_cfg->ioa_is_dead) { 7829 ipr_cmd->ioarcb.res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE); 7830 ipr_cmd->ioarcb.cmd_pkt.request_type = IPR_RQTYPE_IOACMD; 7831 ipr_cmd->ioarcb.cmd_pkt.cdb[0] = IPR_IOA_SHUTDOWN; 7832 ipr_cmd->ioarcb.cmd_pkt.cdb[1] = shutdown_type; 7833 7834 if (shutdown_type == IPR_SHUTDOWN_NORMAL) 7835 timeout = IPR_SHUTDOWN_TIMEOUT; 7836 else if (shutdown_type == IPR_SHUTDOWN_PREPARE_FOR_NORMAL) 7837 timeout = IPR_INTERNAL_TIMEOUT; 7838 else if (ioa_cfg->dual_raid && ipr_dual_ioa_raid) 7839 timeout = IPR_DUAL_IOA_ABBR_SHUTDOWN_TO; 7840 else 7841 timeout = IPR_ABBREV_SHUTDOWN_TIMEOUT; 7842 7843 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, timeout); 7844 7845 rc = IPR_RC_JOB_RETURN; 7846 ipr_cmd->job_step = ipr_reset_ucode_download; 7847 } else 7848 ipr_cmd->job_step = ipr_reset_alert; 7849 7850 LEAVE; 7851 return rc; 7852} 7853 7854/** 7855 * ipr_reset_ioa_job - Adapter reset job 7856 * @ipr_cmd: ipr command struct 7857 * 7858 * Description: This function is the job router for the adapter reset job. 7859 * 7860 * Return value: 7861 * none 7862 **/ 7863static void ipr_reset_ioa_job(struct ipr_cmnd *ipr_cmd) 7864{ 7865 u32 rc, ioasc; 7866 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 7867 7868 do { 7869 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc); 7870 7871 if (ioa_cfg->reset_cmd != ipr_cmd) { 7872 /* 7873 * We are doing nested adapter resets and this is 7874 * not the current reset job. 7875 */ 7876 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q); 7877 return; 7878 } 7879 7880 if (IPR_IOASC_SENSE_KEY(ioasc)) { 7881 rc = ipr_cmd->job_step_failed(ipr_cmd); 7882 if (rc == IPR_RC_JOB_RETURN) 7883 return; 7884 } 7885 7886 ipr_reinit_ipr_cmnd(ipr_cmd); 7887 ipr_cmd->job_step_failed = ipr_reset_cmd_failed; 7888 rc = ipr_cmd->job_step(ipr_cmd); 7889 } while(rc == IPR_RC_JOB_CONTINUE); 7890} 7891 7892/** 7893 * _ipr_initiate_ioa_reset - Initiate an adapter reset 7894 * @ioa_cfg: ioa config struct 7895 * @job_step: first job step of reset job 7896 * @shutdown_type: shutdown type 7897 * 7898 * Description: This function will initiate the reset of the given adapter 7899 * starting at the selected job step. 7900 * If the caller needs to wait on the completion of the reset, 7901 * the caller must sleep on the reset_wait_q. 7902 * 7903 * Return value: 7904 * none 7905 **/ 7906static void _ipr_initiate_ioa_reset(struct ipr_ioa_cfg *ioa_cfg, 7907 int (*job_step) (struct ipr_cmnd *), 7908 enum ipr_shutdown_type shutdown_type) 7909{ 7910 struct ipr_cmnd *ipr_cmd; 7911 7912 ioa_cfg->in_reset_reload = 1; 7913 ioa_cfg->allow_cmds = 0; 7914 scsi_block_requests(ioa_cfg->host); 7915 7916 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg); 7917 ioa_cfg->reset_cmd = ipr_cmd; 7918 ipr_cmd->job_step = job_step; 7919 ipr_cmd->u.shutdown_type = shutdown_type; 7920 7921 ipr_reset_ioa_job(ipr_cmd); 7922} 7923 7924/** 7925 * ipr_initiate_ioa_reset - Initiate an adapter reset 7926 * @ioa_cfg: ioa config struct 7927 * @shutdown_type: shutdown type 7928 * 7929 * Description: This function will initiate the reset of the given adapter. 7930 * If the caller needs to wait on the completion of the reset, 7931 * the caller must sleep on the reset_wait_q. 7932 * 7933 * Return value: 7934 * none 7935 **/ 7936static void ipr_initiate_ioa_reset(struct ipr_ioa_cfg *ioa_cfg, 7937 enum ipr_shutdown_type shutdown_type) 7938{ 7939 if (ioa_cfg->ioa_is_dead) 7940 return; 7941 7942 if (ioa_cfg->in_reset_reload && ioa_cfg->sdt_state == GET_DUMP) 7943 ioa_cfg->sdt_state = ABORT_DUMP; 7944 7945 if (ioa_cfg->reset_retries++ >= IPR_NUM_RESET_RELOAD_RETRIES) { 7946 dev_err(&ioa_cfg->pdev->dev, 7947 "IOA taken offline - error recovery failed\n"); 7948 7949 ioa_cfg->reset_retries = 0; 7950 ioa_cfg->ioa_is_dead = 1; 7951 7952 if (ioa_cfg->in_ioa_bringdown) { 7953 ioa_cfg->reset_cmd = NULL; 7954 ioa_cfg->in_reset_reload = 0; 7955 ipr_fail_all_ops(ioa_cfg); 7956 wake_up_all(&ioa_cfg->reset_wait_q); 7957 7958 spin_unlock_irq(ioa_cfg->host->host_lock); 7959 scsi_unblock_requests(ioa_cfg->host); 7960 spin_lock_irq(ioa_cfg->host->host_lock); 7961 return; 7962 } else { 7963 ioa_cfg->in_ioa_bringdown = 1; 7964 shutdown_type = IPR_SHUTDOWN_NONE; 7965 } 7966 } 7967 7968 _ipr_initiate_ioa_reset(ioa_cfg, ipr_reset_shutdown_ioa, 7969 shutdown_type); 7970} 7971 7972/** 7973 * ipr_reset_freeze - Hold off all I/O activity 7974 * @ipr_cmd: ipr command struct 7975 * 7976 * Description: If the PCI slot is frozen, hold off all I/O 7977 * activity; then, as soon as the slot is available again, 7978 * initiate an adapter reset. 7979 */ 7980static int ipr_reset_freeze(struct ipr_cmnd *ipr_cmd) 7981{ 7982 /* Disallow new interrupts, avoid loop */ 7983 ipr_cmd->ioa_cfg->allow_interrupts = 0; 7984 list_add_tail(&ipr_cmd->queue, &ipr_cmd->ioa_cfg->pending_q); 7985 ipr_cmd->done = ipr_reset_ioa_job; 7986 return IPR_RC_JOB_RETURN; 7987} 7988 7989/** 7990 * ipr_pci_frozen - Called when slot has experienced a PCI bus error. 7991 * @pdev: PCI device struct 7992 * 7993 * Description: This routine is called to tell us that the PCI bus 7994 * is down. Can't do anything here, except put the device driver 7995 * into a holding pattern, waiting for the PCI bus to come back. 7996 */ 7997static void ipr_pci_frozen(struct pci_dev *pdev) 7998{ 7999 unsigned long flags = 0; 8000 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev); 8001 8002 spin_lock_irqsave(ioa_cfg->host->host_lock, flags); 8003 _ipr_initiate_ioa_reset(ioa_cfg, ipr_reset_freeze, IPR_SHUTDOWN_NONE); 8004 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags); 8005} 8006 8007/** 8008 * ipr_pci_slot_reset - Called when PCI slot has been reset. 8009 * @pdev: PCI device struct 8010 * 8011 * Description: This routine is called by the pci error recovery 8012 * code after the PCI slot has been reset, just before we 8013 * should resume normal operations. 8014 */ 8015static pci_ers_result_t ipr_pci_slot_reset(struct pci_dev *pdev) 8016{ 8017 unsigned long flags = 0; 8018 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev); 8019 8020 spin_lock_irqsave(ioa_cfg->host->host_lock, flags); 8021 if (ioa_cfg->needs_warm_reset) 8022 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE); 8023 else 8024 _ipr_initiate_ioa_reset(ioa_cfg, ipr_reset_restore_cfg_space, 8025 IPR_SHUTDOWN_NONE); 8026 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags); 8027 return PCI_ERS_RESULT_RECOVERED; 8028} 8029 8030/** 8031 * ipr_pci_perm_failure - Called when PCI slot is dead for good. 8032 * @pdev: PCI device struct 8033 * 8034 * Description: This routine is called when the PCI bus has 8035 * permanently failed. 8036 */ 8037static void ipr_pci_perm_failure(struct pci_dev *pdev) 8038{ 8039 unsigned long flags = 0; 8040 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev); 8041 8042 spin_lock_irqsave(ioa_cfg->host->host_lock, flags); 8043 if (ioa_cfg->sdt_state == WAIT_FOR_DUMP) 8044 ioa_cfg->sdt_state = ABORT_DUMP; 8045 ioa_cfg->reset_retries = IPR_NUM_RESET_RELOAD_RETRIES; 8046 ioa_cfg->in_ioa_bringdown = 1; 8047 ioa_cfg->allow_cmds = 0; 8048 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE); 8049 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags); 8050} 8051 8052/** 8053 * ipr_pci_error_detected - Called when a PCI error is detected. 8054 * @pdev: PCI device struct 8055 * @state: PCI channel state 8056 * 8057 * Description: Called when a PCI error is detected. 8058 * 8059 * Return value: 8060 * PCI_ERS_RESULT_NEED_RESET or PCI_ERS_RESULT_DISCONNECT 8061 */ 8062static pci_ers_result_t ipr_pci_error_detected(struct pci_dev *pdev, 8063 pci_channel_state_t state) 8064{ 8065 switch (state) { 8066 case pci_channel_io_frozen: 8067 ipr_pci_frozen(pdev); 8068 return PCI_ERS_RESULT_NEED_RESET; 8069 case pci_channel_io_perm_failure: 8070 ipr_pci_perm_failure(pdev); 8071 return PCI_ERS_RESULT_DISCONNECT; 8072 break; 8073 default: 8074 break; 8075 } 8076 return PCI_ERS_RESULT_NEED_RESET; 8077} 8078 8079/** 8080 * ipr_probe_ioa_part2 - Initializes IOAs found in ipr_probe_ioa(..) 8081 * @ioa_cfg: ioa cfg struct 8082 * 8083 * Description: This is the second phase of adapter intialization 8084 * This function takes care of initilizing the adapter to the point 8085 * where it can accept new commands. 8086 8087 * Return value: 8088 * 0 on success / -EIO on failure 8089 **/ 8090static int __devinit ipr_probe_ioa_part2(struct ipr_ioa_cfg *ioa_cfg) 8091{ 8092 int rc = 0; 8093 unsigned long host_lock_flags = 0; 8094 8095 ENTER; 8096 spin_lock_irqsave(ioa_cfg->host->host_lock, host_lock_flags); 8097 dev_dbg(&ioa_cfg->pdev->dev, "ioa_cfg adx: 0x%p\n", ioa_cfg); 8098 if (ioa_cfg->needs_hard_reset) { 8099 ioa_cfg->needs_hard_reset = 0; 8100 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE); 8101 } else 8102 _ipr_initiate_ioa_reset(ioa_cfg, ipr_reset_enable_ioa, 8103 IPR_SHUTDOWN_NONE); 8104 8105 spin_unlock_irqrestore(ioa_cfg->host->host_lock, host_lock_flags); 8106 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload); 8107 spin_lock_irqsave(ioa_cfg->host->host_lock, host_lock_flags); 8108 8109 if (ioa_cfg->ioa_is_dead) { 8110 rc = -EIO; 8111 } else if (ipr_invalid_adapter(ioa_cfg)) { 8112 if (!ipr_testmode) 8113 rc = -EIO; 8114 8115 dev_err(&ioa_cfg->pdev->dev, 8116 "Adapter not supported in this hardware configuration.\n"); 8117 } 8118 8119 spin_unlock_irqrestore(ioa_cfg->host->host_lock, host_lock_flags); 8120 8121 LEAVE; 8122 return rc; 8123} 8124 8125/** 8126 * ipr_free_cmd_blks - Frees command blocks allocated for an adapter 8127 * @ioa_cfg: ioa config struct 8128 * 8129 * Return value: 8130 * none 8131 **/ 8132static void ipr_free_cmd_blks(struct ipr_ioa_cfg *ioa_cfg) 8133{ 8134 int i; 8135 8136 for (i = 0; i < IPR_NUM_CMD_BLKS; i++) { 8137 if (ioa_cfg->ipr_cmnd_list[i]) 8138 pci_pool_free(ioa_cfg->ipr_cmd_pool, 8139 ioa_cfg->ipr_cmnd_list[i], 8140 ioa_cfg->ipr_cmnd_list_dma[i]); 8141 8142 ioa_cfg->ipr_cmnd_list[i] = NULL; 8143 } 8144 8145 if (ioa_cfg->ipr_cmd_pool) 8146 pci_pool_destroy (ioa_cfg->ipr_cmd_pool); 8147 8148 ioa_cfg->ipr_cmd_pool = NULL; 8149} 8150 8151/** 8152 * ipr_free_mem - Frees memory allocated for an adapter 8153 * @ioa_cfg: ioa cfg struct 8154 * 8155 * Return value: 8156 * nothing 8157 **/ 8158static void ipr_free_mem(struct ipr_ioa_cfg *ioa_cfg) 8159{ 8160 int i; 8161 8162 kfree(ioa_cfg->res_entries); 8163 pci_free_consistent(ioa_cfg->pdev, sizeof(struct ipr_misc_cbs), 8164 ioa_cfg->vpd_cbs, ioa_cfg->vpd_cbs_dma); 8165 ipr_free_cmd_blks(ioa_cfg); 8166 pci_free_consistent(ioa_cfg->pdev, sizeof(u32) * IPR_NUM_CMD_BLKS, 8167 ioa_cfg->host_rrq, ioa_cfg->host_rrq_dma); 8168 pci_free_consistent(ioa_cfg->pdev, ioa_cfg->cfg_table_size, 8169 ioa_cfg->u.cfg_table, 8170 ioa_cfg->cfg_table_dma); 8171 8172 for (i = 0; i < IPR_NUM_HCAMS; i++) { 8173 pci_free_consistent(ioa_cfg->pdev, 8174 sizeof(struct ipr_hostrcb), 8175 ioa_cfg->hostrcb[i], 8176 ioa_cfg->hostrcb_dma[i]); 8177 } 8178 8179 ipr_free_dump(ioa_cfg); 8180 kfree(ioa_cfg->trace); 8181} 8182 8183/** 8184 * ipr_free_all_resources - Free all allocated resources for an adapter. 8185 * @ipr_cmd: ipr command struct 8186 * 8187 * This function frees all allocated resources for the 8188 * specified adapter. 8189 * 8190 * Return value: 8191 * none 8192 **/ 8193static void ipr_free_all_resources(struct ipr_ioa_cfg *ioa_cfg) 8194{ 8195 struct pci_dev *pdev = ioa_cfg->pdev; 8196 8197 ENTER; 8198 free_irq(pdev->irq, ioa_cfg); 8199 pci_disable_msi(pdev); 8200 iounmap(ioa_cfg->hdw_dma_regs); 8201 pci_release_regions(pdev); 8202 ipr_free_mem(ioa_cfg); 8203 scsi_host_put(ioa_cfg->host); 8204 pci_disable_device(pdev); 8205 LEAVE; 8206} 8207 8208/** 8209 * ipr_alloc_cmd_blks - Allocate command blocks for an adapter 8210 * @ioa_cfg: ioa config struct 8211 * 8212 * Return value: 8213 * 0 on success / -ENOMEM on allocation failure 8214 **/ 8215static int __devinit ipr_alloc_cmd_blks(struct ipr_ioa_cfg *ioa_cfg) 8216{ 8217 struct ipr_cmnd *ipr_cmd; 8218 struct ipr_ioarcb *ioarcb; 8219 dma_addr_t dma_addr; 8220 int i; 8221 8222 ioa_cfg->ipr_cmd_pool = pci_pool_create (IPR_NAME, ioa_cfg->pdev, 8223 sizeof(struct ipr_cmnd), 16, 0); 8224 8225 if (!ioa_cfg->ipr_cmd_pool) 8226 return -ENOMEM; 8227 8228 for (i = 0; i < IPR_NUM_CMD_BLKS; i++) { 8229 ipr_cmd = pci_pool_alloc (ioa_cfg->ipr_cmd_pool, GFP_KERNEL, &dma_addr); 8230 8231 if (!ipr_cmd) { 8232 ipr_free_cmd_blks(ioa_cfg); 8233 return -ENOMEM; 8234 } 8235 8236 memset(ipr_cmd, 0, sizeof(*ipr_cmd)); 8237 ioa_cfg->ipr_cmnd_list[i] = ipr_cmd; 8238 ioa_cfg->ipr_cmnd_list_dma[i] = dma_addr; 8239 8240 ioarcb = &ipr_cmd->ioarcb; 8241 ipr_cmd->dma_addr = dma_addr; 8242 if (ioa_cfg->sis64) 8243 ioarcb->a.ioarcb_host_pci_addr64 = cpu_to_be64(dma_addr); 8244 else 8245 ioarcb->a.ioarcb_host_pci_addr = cpu_to_be32(dma_addr); 8246 8247 ioarcb->host_response_handle = cpu_to_be32(i << 2); 8248 if (ioa_cfg->sis64) { 8249 ioarcb->u.sis64_addr_data.data_ioadl_addr = 8250 cpu_to_be64(dma_addr + offsetof(struct ipr_cmnd, i.ioadl64)); 8251 ioarcb->u.sis64_addr_data.ioasa_host_pci_addr = 8252 cpu_to_be64(dma_addr + offsetof(struct ipr_cmnd, s.ioasa64)); 8253 } else { 8254 ioarcb->write_ioadl_addr = 8255 cpu_to_be32(dma_addr + offsetof(struct ipr_cmnd, i.ioadl)); 8256 ioarcb->read_ioadl_addr = ioarcb->write_ioadl_addr; 8257 ioarcb->ioasa_host_pci_addr = 8258 cpu_to_be32(dma_addr + offsetof(struct ipr_cmnd, s.ioasa)); 8259 } 8260 ioarcb->ioasa_len = cpu_to_be16(sizeof(struct ipr_ioasa)); 8261 ipr_cmd->cmd_index = i; 8262 ipr_cmd->ioa_cfg = ioa_cfg; 8263 ipr_cmd->sense_buffer_dma = dma_addr + 8264 offsetof(struct ipr_cmnd, sense_buffer); 8265 8266 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q); 8267 } 8268 8269 return 0; 8270} 8271 8272/** 8273 * ipr_alloc_mem - Allocate memory for an adapter 8274 * @ioa_cfg: ioa config struct 8275 * 8276 * Return value: 8277 * 0 on success / non-zero for error 8278 **/ 8279static int __devinit ipr_alloc_mem(struct ipr_ioa_cfg *ioa_cfg) 8280{ 8281 struct pci_dev *pdev = ioa_cfg->pdev; 8282 int i, rc = -ENOMEM; 8283 8284 ENTER; 8285 ioa_cfg->res_entries = kzalloc(sizeof(struct ipr_resource_entry) * 8286 ioa_cfg->max_devs_supported, GFP_KERNEL); 8287 8288 if (!ioa_cfg->res_entries) 8289 goto out; 8290 8291 if (ioa_cfg->sis64) { 8292 ioa_cfg->target_ids = kzalloc(sizeof(unsigned long) * 8293 BITS_TO_LONGS(ioa_cfg->max_devs_supported), GFP_KERNEL); 8294 ioa_cfg->array_ids = kzalloc(sizeof(unsigned long) * 8295 BITS_TO_LONGS(ioa_cfg->max_devs_supported), GFP_KERNEL); 8296 ioa_cfg->vset_ids = kzalloc(sizeof(unsigned long) * 8297 BITS_TO_LONGS(ioa_cfg->max_devs_supported), GFP_KERNEL); 8298 } 8299 8300 for (i = 0; i < ioa_cfg->max_devs_supported; i++) { 8301 list_add_tail(&ioa_cfg->res_entries[i].queue, &ioa_cfg->free_res_q); 8302 ioa_cfg->res_entries[i].ioa_cfg = ioa_cfg; 8303 } 8304 8305 ioa_cfg->vpd_cbs = pci_alloc_consistent(ioa_cfg->pdev, 8306 sizeof(struct ipr_misc_cbs), 8307 &ioa_cfg->vpd_cbs_dma); 8308 8309 if (!ioa_cfg->vpd_cbs) 8310 goto out_free_res_entries; 8311 8312 if (ipr_alloc_cmd_blks(ioa_cfg)) 8313 goto out_free_vpd_cbs; 8314 8315 ioa_cfg->host_rrq = pci_alloc_consistent(ioa_cfg->pdev, 8316 sizeof(u32) * IPR_NUM_CMD_BLKS, 8317 &ioa_cfg->host_rrq_dma); 8318 8319 if (!ioa_cfg->host_rrq) 8320 goto out_ipr_free_cmd_blocks; 8321 8322 ioa_cfg->u.cfg_table = pci_alloc_consistent(ioa_cfg->pdev, 8323 ioa_cfg->cfg_table_size, 8324 &ioa_cfg->cfg_table_dma); 8325 8326 if (!ioa_cfg->u.cfg_table) 8327 goto out_free_host_rrq; 8328 8329 for (i = 0; i < IPR_NUM_HCAMS; i++) { 8330 ioa_cfg->hostrcb[i] = pci_alloc_consistent(ioa_cfg->pdev, 8331 sizeof(struct ipr_hostrcb), 8332 &ioa_cfg->hostrcb_dma[i]); 8333 8334 if (!ioa_cfg->hostrcb[i]) 8335 goto out_free_hostrcb_dma; 8336 8337 ioa_cfg->hostrcb[i]->hostrcb_dma = 8338 ioa_cfg->hostrcb_dma[i] + offsetof(struct ipr_hostrcb, hcam); 8339 ioa_cfg->hostrcb[i]->ioa_cfg = ioa_cfg; 8340 list_add_tail(&ioa_cfg->hostrcb[i]->queue, &ioa_cfg->hostrcb_free_q); 8341 } 8342 8343 ioa_cfg->trace = kzalloc(sizeof(struct ipr_trace_entry) * 8344 IPR_NUM_TRACE_ENTRIES, GFP_KERNEL); 8345 8346 if (!ioa_cfg->trace) 8347 goto out_free_hostrcb_dma; 8348 8349 rc = 0; 8350out: 8351 LEAVE; 8352 return rc; 8353 8354out_free_hostrcb_dma: 8355 while (i-- > 0) { 8356 pci_free_consistent(pdev, sizeof(struct ipr_hostrcb), 8357 ioa_cfg->hostrcb[i], 8358 ioa_cfg->hostrcb_dma[i]); 8359 } 8360 pci_free_consistent(pdev, ioa_cfg->cfg_table_size, 8361 ioa_cfg->u.cfg_table, 8362 ioa_cfg->cfg_table_dma); 8363out_free_host_rrq: 8364 pci_free_consistent(pdev, sizeof(u32) * IPR_NUM_CMD_BLKS, 8365 ioa_cfg->host_rrq, ioa_cfg->host_rrq_dma); 8366out_ipr_free_cmd_blocks: 8367 ipr_free_cmd_blks(ioa_cfg); 8368out_free_vpd_cbs: 8369 pci_free_consistent(pdev, sizeof(struct ipr_misc_cbs), 8370 ioa_cfg->vpd_cbs, ioa_cfg->vpd_cbs_dma); 8371out_free_res_entries: 8372 kfree(ioa_cfg->res_entries); 8373 goto out; 8374} 8375 8376/** 8377 * ipr_initialize_bus_attr - Initialize SCSI bus attributes to default values 8378 * @ioa_cfg: ioa config struct 8379 * 8380 * Return value: 8381 * none 8382 **/ 8383static void __devinit ipr_initialize_bus_attr(struct ipr_ioa_cfg *ioa_cfg) 8384{ 8385 int i; 8386 8387 for (i = 0; i < IPR_MAX_NUM_BUSES; i++) { 8388 ioa_cfg->bus_attr[i].bus = i; 8389 ioa_cfg->bus_attr[i].qas_enabled = 0; 8390 ioa_cfg->bus_attr[i].bus_width = IPR_DEFAULT_BUS_WIDTH; 8391 if (ipr_max_speed < ARRAY_SIZE(ipr_max_bus_speeds)) 8392 ioa_cfg->bus_attr[i].max_xfer_rate = ipr_max_bus_speeds[ipr_max_speed]; 8393 else 8394 ioa_cfg->bus_attr[i].max_xfer_rate = IPR_U160_SCSI_RATE; 8395 } 8396} 8397 8398/** 8399 * ipr_init_ioa_cfg - Initialize IOA config struct 8400 * @ioa_cfg: ioa config struct 8401 * @host: scsi host struct 8402 * @pdev: PCI dev struct 8403 * 8404 * Return value: 8405 * none 8406 **/ 8407static void __devinit ipr_init_ioa_cfg(struct ipr_ioa_cfg *ioa_cfg, 8408 struct Scsi_Host *host, struct pci_dev *pdev) 8409{ 8410 const struct ipr_interrupt_offsets *p; 8411 struct ipr_interrupts *t; 8412 void __iomem *base; 8413 8414 ioa_cfg->host = host; 8415 ioa_cfg->pdev = pdev; 8416 ioa_cfg->log_level = ipr_log_level; 8417 ioa_cfg->doorbell = IPR_DOORBELL; 8418 sprintf(ioa_cfg->eye_catcher, IPR_EYECATCHER); 8419 sprintf(ioa_cfg->trace_start, IPR_TRACE_START_LABEL); 8420 sprintf(ioa_cfg->ipr_free_label, IPR_FREEQ_LABEL); 8421 sprintf(ioa_cfg->ipr_pending_label, IPR_PENDQ_LABEL); 8422 sprintf(ioa_cfg->cfg_table_start, IPR_CFG_TBL_START); 8423 sprintf(ioa_cfg->resource_table_label, IPR_RES_TABLE_LABEL); 8424 sprintf(ioa_cfg->ipr_hcam_label, IPR_HCAM_LABEL); 8425 sprintf(ioa_cfg->ipr_cmd_label, IPR_CMD_LABEL); 8426 8427 INIT_LIST_HEAD(&ioa_cfg->free_q); 8428 INIT_LIST_HEAD(&ioa_cfg->pending_q); 8429 INIT_LIST_HEAD(&ioa_cfg->hostrcb_free_q); 8430 INIT_LIST_HEAD(&ioa_cfg->hostrcb_pending_q); 8431 INIT_LIST_HEAD(&ioa_cfg->free_res_q); 8432 INIT_LIST_HEAD(&ioa_cfg->used_res_q); 8433 INIT_WORK(&ioa_cfg->work_q, ipr_worker_thread); 8434 init_waitqueue_head(&ioa_cfg->reset_wait_q); 8435 init_waitqueue_head(&ioa_cfg->msi_wait_q); 8436 ioa_cfg->sdt_state = INACTIVE; 8437 8438 ipr_initialize_bus_attr(ioa_cfg); 8439 ioa_cfg->max_devs_supported = ipr_max_devs; 8440 8441 if (ioa_cfg->sis64) { 8442 host->max_id = IPR_MAX_SIS64_TARGETS_PER_BUS; 8443 host->max_lun = IPR_MAX_SIS64_LUNS_PER_TARGET; 8444 if (ipr_max_devs > IPR_MAX_SIS64_DEVS) 8445 ioa_cfg->max_devs_supported = IPR_MAX_SIS64_DEVS; 8446 } else { 8447 host->max_id = IPR_MAX_NUM_TARGETS_PER_BUS; 8448 host->max_lun = IPR_MAX_NUM_LUNS_PER_TARGET; 8449 if (ipr_max_devs > IPR_MAX_PHYSICAL_DEVS) 8450 ioa_cfg->max_devs_supported = IPR_MAX_PHYSICAL_DEVS; 8451 } 8452 host->max_channel = IPR_MAX_BUS_TO_SCAN; 8453 host->unique_id = host->host_no; 8454 host->max_cmd_len = IPR_MAX_CDB_LEN; 8455 pci_set_drvdata(pdev, ioa_cfg); 8456 8457 p = &ioa_cfg->chip_cfg->regs; 8458 t = &ioa_cfg->regs; 8459 base = ioa_cfg->hdw_dma_regs; 8460 8461 t->set_interrupt_mask_reg = base + p->set_interrupt_mask_reg; 8462 t->clr_interrupt_mask_reg = base + p->clr_interrupt_mask_reg; 8463 t->clr_interrupt_mask_reg32 = base + p->clr_interrupt_mask_reg32; 8464 t->sense_interrupt_mask_reg = base + p->sense_interrupt_mask_reg; 8465 t->sense_interrupt_mask_reg32 = base + p->sense_interrupt_mask_reg32; 8466 t->clr_interrupt_reg = base + p->clr_interrupt_reg; 8467 t->clr_interrupt_reg32 = base + p->clr_interrupt_reg32; 8468 t->sense_interrupt_reg = base + p->sense_interrupt_reg; 8469 t->sense_interrupt_reg32 = base + p->sense_interrupt_reg32; 8470 t->ioarrin_reg = base + p->ioarrin_reg; 8471 t->sense_uproc_interrupt_reg = base + p->sense_uproc_interrupt_reg; 8472 t->sense_uproc_interrupt_reg32 = base + p->sense_uproc_interrupt_reg32; 8473 t->set_uproc_interrupt_reg = base + p->set_uproc_interrupt_reg; 8474 t->set_uproc_interrupt_reg32 = base + p->set_uproc_interrupt_reg32; 8475 t->clr_uproc_interrupt_reg = base + p->clr_uproc_interrupt_reg; 8476 t->clr_uproc_interrupt_reg32 = base + p->clr_uproc_interrupt_reg32; 8477 8478 if (ioa_cfg->sis64) { 8479 t->init_feedback_reg = base + p->init_feedback_reg; 8480 t->dump_addr_reg = base + p->dump_addr_reg; 8481 t->dump_data_reg = base + p->dump_data_reg; 8482 t->endian_swap_reg = base + p->endian_swap_reg; 8483 } 8484} 8485 8486/** 8487 * ipr_get_chip_info - Find adapter chip information 8488 * @dev_id: PCI device id struct 8489 * 8490 * Return value: 8491 * ptr to chip information on success / NULL on failure 8492 **/ 8493static const struct ipr_chip_t * __devinit 8494ipr_get_chip_info(const struct pci_device_id *dev_id) 8495{ 8496 int i; 8497 8498 for (i = 0; i < ARRAY_SIZE(ipr_chip); i++) 8499 if (ipr_chip[i].vendor == dev_id->vendor && 8500 ipr_chip[i].device == dev_id->device) 8501 return &ipr_chip[i]; 8502 return NULL; 8503} 8504 8505/** 8506 * ipr_test_intr - Handle the interrupt generated in ipr_test_msi(). 8507 * @pdev: PCI device struct 8508 * 8509 * Description: Simply set the msi_received flag to 1 indicating that 8510 * Message Signaled Interrupts are supported. 8511 * 8512 * Return value: 8513 * 0 on success / non-zero on failure 8514 **/ 8515static irqreturn_t __devinit ipr_test_intr(int irq, void *devp) 8516{ 8517 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)devp; 8518 unsigned long lock_flags = 0; 8519 irqreturn_t rc = IRQ_HANDLED; 8520 8521 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 8522 8523 ioa_cfg->msi_received = 1; 8524 wake_up(&ioa_cfg->msi_wait_q); 8525 8526 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 8527 return rc; 8528} 8529 8530/** 8531 * ipr_test_msi - Test for Message Signaled Interrupt (MSI) support. 8532 * @pdev: PCI device struct 8533 * 8534 * Description: The return value from pci_enable_msi() can not always be 8535 * trusted. This routine sets up and initiates a test interrupt to determine 8536 * if the interrupt is received via the ipr_test_intr() service routine. 8537 * If the tests fails, the driver will fall back to LSI. 8538 * 8539 * Return value: 8540 * 0 on success / non-zero on failure 8541 **/ 8542static int __devinit ipr_test_msi(struct ipr_ioa_cfg *ioa_cfg, 8543 struct pci_dev *pdev) 8544{ 8545 int rc; 8546 volatile u32 int_reg; 8547 unsigned long lock_flags = 0; 8548 8549 ENTER; 8550 8551 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 8552 init_waitqueue_head(&ioa_cfg->msi_wait_q); 8553 ioa_cfg->msi_received = 0; 8554 ipr_mask_and_clear_interrupts(ioa_cfg, ~IPR_PCII_IOA_TRANS_TO_OPER); 8555 writel(IPR_PCII_IO_DEBUG_ACKNOWLEDGE, ioa_cfg->regs.clr_interrupt_mask_reg32); 8556 int_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg); 8557 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 8558 8559 rc = request_irq(pdev->irq, ipr_test_intr, 0, IPR_NAME, ioa_cfg); 8560 if (rc) { 8561 dev_err(&pdev->dev, "Can not assign irq %d\n", pdev->irq); 8562 return rc; 8563 } else if (ipr_debug) 8564 dev_info(&pdev->dev, "IRQ assigned: %d\n", pdev->irq); 8565 8566 writel(IPR_PCII_IO_DEBUG_ACKNOWLEDGE, ioa_cfg->regs.sense_interrupt_reg32); 8567 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg); 8568 wait_event_timeout(ioa_cfg->msi_wait_q, ioa_cfg->msi_received, HZ); 8569 ipr_mask_and_clear_interrupts(ioa_cfg, ~IPR_PCII_IOA_TRANS_TO_OPER); 8570 8571 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 8572 if (!ioa_cfg->msi_received) { 8573 /* MSI test failed */ 8574 dev_info(&pdev->dev, "MSI test failed. Falling back to LSI.\n"); 8575 rc = -EOPNOTSUPP; 8576 } else if (ipr_debug) 8577 dev_info(&pdev->dev, "MSI test succeeded.\n"); 8578 8579 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 8580 8581 free_irq(pdev->irq, ioa_cfg); 8582 8583 LEAVE; 8584 8585 return rc; 8586} 8587 8588/** 8589 * ipr_probe_ioa - Allocates memory and does first stage of initialization 8590 * @pdev: PCI device struct 8591 * @dev_id: PCI device id struct 8592 * 8593 * Return value: 8594 * 0 on success / non-zero on failure 8595 **/ 8596static int __devinit ipr_probe_ioa(struct pci_dev *pdev, 8597 const struct pci_device_id *dev_id) 8598{ 8599 struct ipr_ioa_cfg *ioa_cfg; 8600 struct Scsi_Host *host; 8601 unsigned long ipr_regs_pci; 8602 void __iomem *ipr_regs; 8603 int rc = PCIBIOS_SUCCESSFUL; 8604 volatile u32 mask, uproc, interrupts; 8605 8606 ENTER; 8607 8608 if ((rc = pci_enable_device(pdev))) { 8609 dev_err(&pdev->dev, "Cannot enable adapter\n"); 8610 goto out; 8611 } 8612 8613 dev_info(&pdev->dev, "Found IOA with IRQ: %d\n", pdev->irq); 8614 8615 host = scsi_host_alloc(&driver_template, sizeof(*ioa_cfg)); 8616 8617 if (!host) { 8618 dev_err(&pdev->dev, "call to scsi_host_alloc failed!\n"); 8619 rc = -ENOMEM; 8620 goto out_disable; 8621 } 8622 8623 ioa_cfg = (struct ipr_ioa_cfg *)host->hostdata; 8624 memset(ioa_cfg, 0, sizeof(struct ipr_ioa_cfg)); 8625 ata_host_init(&ioa_cfg->ata_host, &pdev->dev, 8626 sata_port_info.flags, &ipr_sata_ops); 8627 8628 ioa_cfg->ipr_chip = ipr_get_chip_info(dev_id); 8629 8630 if (!ioa_cfg->ipr_chip) { 8631 dev_err(&pdev->dev, "Unknown adapter chipset 0x%04X 0x%04X\n", 8632 dev_id->vendor, dev_id->device); 8633 goto out_scsi_host_put; 8634 } 8635 8636 /* set SIS 32 or SIS 64 */ 8637 ioa_cfg->sis64 = ioa_cfg->ipr_chip->sis_type == IPR_SIS64 ? 1 : 0; 8638 ioa_cfg->chip_cfg = ioa_cfg->ipr_chip->cfg; 8639 8640 if (ipr_transop_timeout) 8641 ioa_cfg->transop_timeout = ipr_transop_timeout; 8642 else if (dev_id->driver_data & IPR_USE_LONG_TRANSOP_TIMEOUT) 8643 ioa_cfg->transop_timeout = IPR_LONG_OPERATIONAL_TIMEOUT; 8644 else 8645 ioa_cfg->transop_timeout = IPR_OPERATIONAL_TIMEOUT; 8646 8647 ioa_cfg->revid = pdev->revision; 8648 8649 ipr_regs_pci = pci_resource_start(pdev, 0); 8650 8651 rc = pci_request_regions(pdev, IPR_NAME); 8652 if (rc < 0) { 8653 dev_err(&pdev->dev, 8654 "Couldn't register memory range of registers\n"); 8655 goto out_scsi_host_put; 8656 } 8657 8658 ipr_regs = pci_ioremap_bar(pdev, 0); 8659 8660 if (!ipr_regs) { 8661 dev_err(&pdev->dev, 8662 "Couldn't map memory range of registers\n"); 8663 rc = -ENOMEM; 8664 goto out_release_regions; 8665 } 8666 8667 ioa_cfg->hdw_dma_regs = ipr_regs; 8668 ioa_cfg->hdw_dma_regs_pci = ipr_regs_pci; 8669 ioa_cfg->ioa_mailbox = ioa_cfg->chip_cfg->mailbox + ipr_regs; 8670 8671 ipr_init_ioa_cfg(ioa_cfg, host, pdev); 8672 8673 pci_set_master(pdev); 8674 8675 if (ioa_cfg->sis64) { 8676 rc = pci_set_dma_mask(pdev, DMA_BIT_MASK(64)); 8677 if (rc < 0) { 8678 dev_dbg(&pdev->dev, "Failed to set 64 bit PCI DMA mask\n"); 8679 rc = pci_set_dma_mask(pdev, DMA_BIT_MASK(32)); 8680 } 8681 8682 } else 8683 rc = pci_set_dma_mask(pdev, DMA_BIT_MASK(32)); 8684 8685 if (rc < 0) { 8686 dev_err(&pdev->dev, "Failed to set PCI DMA mask\n"); 8687 goto cleanup_nomem; 8688 } 8689 8690 rc = pci_write_config_byte(pdev, PCI_CACHE_LINE_SIZE, 8691 ioa_cfg->chip_cfg->cache_line_size); 8692 8693 if (rc != PCIBIOS_SUCCESSFUL) { 8694 dev_err(&pdev->dev, "Write of cache line size failed\n"); 8695 rc = -EIO; 8696 goto cleanup_nomem; 8697 } 8698 8699 /* Enable MSI style interrupts if they are supported. */ 8700 if (ioa_cfg->ipr_chip->intr_type == IPR_USE_MSI && !pci_enable_msi(pdev)) { 8701 rc = ipr_test_msi(ioa_cfg, pdev); 8702 if (rc == -EOPNOTSUPP) 8703 pci_disable_msi(pdev); 8704 else if (rc) 8705 goto out_msi_disable; 8706 else 8707 dev_info(&pdev->dev, "MSI enabled with IRQ: %d\n", pdev->irq); 8708 } else if (ipr_debug) 8709 dev_info(&pdev->dev, "Cannot enable MSI.\n"); 8710 8711 /* Save away PCI config space for use following IOA reset */ 8712 rc = pci_save_state(pdev); 8713 8714 if (rc != PCIBIOS_SUCCESSFUL) { 8715 dev_err(&pdev->dev, "Failed to save PCI config space\n"); 8716 rc = -EIO; 8717 goto cleanup_nomem; 8718 } 8719 8720 if ((rc = ipr_save_pcix_cmd_reg(ioa_cfg))) 8721 goto cleanup_nomem; 8722 8723 if ((rc = ipr_set_pcix_cmd_reg(ioa_cfg))) 8724 goto cleanup_nomem; 8725 8726 if (ioa_cfg->sis64) 8727 ioa_cfg->cfg_table_size = (sizeof(struct ipr_config_table_hdr64) 8728 + ((sizeof(struct ipr_config_table_entry64) 8729 * ioa_cfg->max_devs_supported))); 8730 else 8731 ioa_cfg->cfg_table_size = (sizeof(struct ipr_config_table_hdr) 8732 + ((sizeof(struct ipr_config_table_entry) 8733 * ioa_cfg->max_devs_supported))); 8734 8735 rc = ipr_alloc_mem(ioa_cfg); 8736 if (rc < 0) { 8737 dev_err(&pdev->dev, 8738 "Couldn't allocate enough memory for device driver!\n"); 8739 goto cleanup_nomem; 8740 } 8741 8742 /* 8743 * If HRRQ updated interrupt is not masked, or reset alert is set, 8744 * the card is in an unknown state and needs a hard reset 8745 */ 8746 mask = readl(ioa_cfg->regs.sense_interrupt_mask_reg32); 8747 interrupts = readl(ioa_cfg->regs.sense_interrupt_reg32); 8748 uproc = readl(ioa_cfg->regs.sense_uproc_interrupt_reg32); 8749 if ((mask & IPR_PCII_HRRQ_UPDATED) == 0 || (uproc & IPR_UPROCI_RESET_ALERT)) 8750 ioa_cfg->needs_hard_reset = 1; 8751 if (interrupts & IPR_PCII_ERROR_INTERRUPTS) 8752 ioa_cfg->needs_hard_reset = 1; 8753 if (interrupts & IPR_PCII_IOA_UNIT_CHECKED) 8754 ioa_cfg->ioa_unit_checked = 1; 8755 8756 ipr_mask_and_clear_interrupts(ioa_cfg, ~IPR_PCII_IOA_TRANS_TO_OPER); 8757 rc = request_irq(pdev->irq, ipr_isr, 8758 ioa_cfg->msi_received ? 0 : IRQF_SHARED, 8759 IPR_NAME, ioa_cfg); 8760 8761 if (rc) { 8762 dev_err(&pdev->dev, "Couldn't register IRQ %d! rc=%d\n", 8763 pdev->irq, rc); 8764 goto cleanup_nolog; 8765 } 8766 8767 if ((dev_id->driver_data & IPR_USE_PCI_WARM_RESET) || 8768 (dev_id->device == PCI_DEVICE_ID_IBM_OBSIDIAN_E && !ioa_cfg->revid)) { 8769 ioa_cfg->needs_warm_reset = 1; 8770 ioa_cfg->reset = ipr_reset_slot_reset; 8771 } else 8772 ioa_cfg->reset = ipr_reset_start_bist; 8773 8774 spin_lock(&ipr_driver_lock); 8775 list_add_tail(&ioa_cfg->queue, &ipr_ioa_head); 8776 spin_unlock(&ipr_driver_lock); 8777 8778 LEAVE; 8779out: 8780 return rc; 8781 8782cleanup_nolog: 8783 ipr_free_mem(ioa_cfg); 8784cleanup_nomem: 8785 iounmap(ipr_regs); 8786out_msi_disable: 8787 pci_disable_msi(pdev); 8788out_release_regions: 8789 pci_release_regions(pdev); 8790out_scsi_host_put: 8791 scsi_host_put(host); 8792out_disable: 8793 pci_disable_device(pdev); 8794 goto out; 8795} 8796 8797/** 8798 * ipr_scan_vsets - Scans for VSET devices 8799 * @ioa_cfg: ioa config struct 8800 * 8801 * Description: Since the VSET resources do not follow SAM in that we can have 8802 * sparse LUNs with no LUN 0, we have to scan for these ourselves. 8803 * 8804 * Return value: 8805 * none 8806 **/ 8807static void ipr_scan_vsets(struct ipr_ioa_cfg *ioa_cfg) 8808{ 8809 int target, lun; 8810 8811 for (target = 0; target < IPR_MAX_NUM_TARGETS_PER_BUS; target++) 8812 for (lun = 0; lun < IPR_MAX_NUM_VSET_LUNS_PER_TARGET; lun++ ) 8813 scsi_add_device(ioa_cfg->host, IPR_VSET_BUS, target, lun); 8814} 8815 8816/** 8817 * ipr_initiate_ioa_bringdown - Bring down an adapter 8818 * @ioa_cfg: ioa config struct 8819 * @shutdown_type: shutdown type 8820 * 8821 * Description: This function will initiate bringing down the adapter. 8822 * This consists of issuing an IOA shutdown to the adapter 8823 * to flush the cache, and running BIST. 8824 * If the caller needs to wait on the completion of the reset, 8825 * the caller must sleep on the reset_wait_q. 8826 * 8827 * Return value: 8828 * none 8829 **/ 8830static void ipr_initiate_ioa_bringdown(struct ipr_ioa_cfg *ioa_cfg, 8831 enum ipr_shutdown_type shutdown_type) 8832{ 8833 ENTER; 8834 if (ioa_cfg->sdt_state == WAIT_FOR_DUMP) 8835 ioa_cfg->sdt_state = ABORT_DUMP; 8836 ioa_cfg->reset_retries = 0; 8837 ioa_cfg->in_ioa_bringdown = 1; 8838 ipr_initiate_ioa_reset(ioa_cfg, shutdown_type); 8839 LEAVE; 8840} 8841 8842/** 8843 * __ipr_remove - Remove a single adapter 8844 * @pdev: pci device struct 8845 * 8846 * Adapter hot plug remove entry point. 8847 * 8848 * Return value: 8849 * none 8850 **/ 8851static void __ipr_remove(struct pci_dev *pdev) 8852{ 8853 unsigned long host_lock_flags = 0; 8854 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev); 8855 ENTER; 8856 8857 spin_lock_irqsave(ioa_cfg->host->host_lock, host_lock_flags); 8858 while(ioa_cfg->in_reset_reload) { 8859 spin_unlock_irqrestore(ioa_cfg->host->host_lock, host_lock_flags); 8860 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload); 8861 spin_lock_irqsave(ioa_cfg->host->host_lock, host_lock_flags); 8862 } 8863 8864 ipr_initiate_ioa_bringdown(ioa_cfg, IPR_SHUTDOWN_NORMAL); 8865 8866 spin_unlock_irqrestore(ioa_cfg->host->host_lock, host_lock_flags); 8867 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload); 8868 flush_scheduled_work(); 8869 spin_lock_irqsave(ioa_cfg->host->host_lock, host_lock_flags); 8870 8871 spin_lock(&ipr_driver_lock); 8872 list_del(&ioa_cfg->queue); 8873 spin_unlock(&ipr_driver_lock); 8874 8875 if (ioa_cfg->sdt_state == ABORT_DUMP) 8876 ioa_cfg->sdt_state = WAIT_FOR_DUMP; 8877 spin_unlock_irqrestore(ioa_cfg->host->host_lock, host_lock_flags); 8878 8879 ipr_free_all_resources(ioa_cfg); 8880 8881 LEAVE; 8882} 8883 8884/** 8885 * ipr_remove - IOA hot plug remove entry point 8886 * @pdev: pci device struct 8887 * 8888 * Adapter hot plug remove entry point. 8889 * 8890 * Return value: 8891 * none 8892 **/ 8893static void __devexit ipr_remove(struct pci_dev *pdev) 8894{ 8895 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev); 8896 8897 ENTER; 8898 8899 ipr_remove_trace_file(&ioa_cfg->host->shost_dev.kobj, 8900 &ipr_trace_attr); 8901 ipr_remove_dump_file(&ioa_cfg->host->shost_dev.kobj, 8902 &ipr_dump_attr); 8903 scsi_remove_host(ioa_cfg->host); 8904 8905 __ipr_remove(pdev); 8906 8907 LEAVE; 8908} 8909 8910/** 8911 * ipr_probe - Adapter hot plug add entry point 8912 * 8913 * Return value: 8914 * 0 on success / non-zero on failure 8915 **/ 8916static int __devinit ipr_probe(struct pci_dev *pdev, 8917 const struct pci_device_id *dev_id) 8918{ 8919 struct ipr_ioa_cfg *ioa_cfg; 8920 int rc; 8921 8922 rc = ipr_probe_ioa(pdev, dev_id); 8923 8924 if (rc) 8925 return rc; 8926 8927 ioa_cfg = pci_get_drvdata(pdev); 8928 rc = ipr_probe_ioa_part2(ioa_cfg); 8929 8930 if (rc) { 8931 __ipr_remove(pdev); 8932 return rc; 8933 } 8934 8935 rc = scsi_add_host(ioa_cfg->host, &pdev->dev); 8936 8937 if (rc) { 8938 __ipr_remove(pdev); 8939 return rc; 8940 } 8941 8942 rc = ipr_create_trace_file(&ioa_cfg->host->shost_dev.kobj, 8943 &ipr_trace_attr); 8944 8945 if (rc) { 8946 scsi_remove_host(ioa_cfg->host); 8947 __ipr_remove(pdev); 8948 return rc; 8949 } 8950 8951 rc = ipr_create_dump_file(&ioa_cfg->host->shost_dev.kobj, 8952 &ipr_dump_attr); 8953 8954 if (rc) { 8955 ipr_remove_trace_file(&ioa_cfg->host->shost_dev.kobj, 8956 &ipr_trace_attr); 8957 scsi_remove_host(ioa_cfg->host); 8958 __ipr_remove(pdev); 8959 return rc; 8960 } 8961 8962 scsi_scan_host(ioa_cfg->host); 8963 ipr_scan_vsets(ioa_cfg); 8964 scsi_add_device(ioa_cfg->host, IPR_IOA_BUS, IPR_IOA_TARGET, IPR_IOA_LUN); 8965 ioa_cfg->allow_ml_add_del = 1; 8966 ioa_cfg->host->max_channel = IPR_VSET_BUS; 8967 schedule_work(&ioa_cfg->work_q); 8968 return 0; 8969} 8970 8971/** 8972 * ipr_shutdown - Shutdown handler. 8973 * @pdev: pci device struct 8974 * 8975 * This function is invoked upon system shutdown/reboot. It will issue 8976 * an adapter shutdown to the adapter to flush the write cache. 8977 * 8978 * Return value: 8979 * none 8980 **/ 8981static void ipr_shutdown(struct pci_dev *pdev) 8982{ 8983 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev); 8984 unsigned long lock_flags = 0; 8985 8986 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 8987 while(ioa_cfg->in_reset_reload) { 8988 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 8989 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload); 8990 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 8991 } 8992 8993 ipr_initiate_ioa_bringdown(ioa_cfg, IPR_SHUTDOWN_NORMAL); 8994 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 8995 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload); 8996} 8997 8998static struct pci_device_id ipr_pci_table[] __devinitdata = { 8999 { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE, 9000 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_5702, 0, 0, 0 }, 9001 { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE, 9002 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_5703, 0, 0, 0 }, 9003 { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE, 9004 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_573D, 0, 0, 0 }, 9005 { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE, 9006 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_573E, 0, 0, 0 }, 9007 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE, 9008 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_571B, 0, 0, 0 }, 9009 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE, 9010 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572E, 0, 0, 0 }, 9011 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE, 9012 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_571A, 0, 0, 0 }, 9013 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE, 9014 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_575B, 0, 0, 9015 IPR_USE_LONG_TRANSOP_TIMEOUT }, 9016 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_OBSIDIAN, 9017 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572A, 0, 0, 0 }, 9018 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_OBSIDIAN, 9019 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572B, 0, 0, 9020 IPR_USE_LONG_TRANSOP_TIMEOUT }, 9021 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_OBSIDIAN, 9022 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_575C, 0, 0, 9023 IPR_USE_LONG_TRANSOP_TIMEOUT }, 9024 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN, 9025 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572A, 0, 0, 0 }, 9026 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN, 9027 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572B, 0, 0, 9028 IPR_USE_LONG_TRANSOP_TIMEOUT}, 9029 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN, 9030 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_575C, 0, 0, 9031 IPR_USE_LONG_TRANSOP_TIMEOUT }, 9032 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN_E, 9033 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_574E, 0, 0, 9034 IPR_USE_LONG_TRANSOP_TIMEOUT }, 9035 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN_E, 9036 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57B3, 0, 0, 0 }, 9037 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN_E, 9038 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57CC, 0, 0, 0 }, 9039 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN_E, 9040 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57B7, 0, 0, 9041 IPR_USE_LONG_TRANSOP_TIMEOUT | IPR_USE_PCI_WARM_RESET }, 9042 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_SNIPE, 9043 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_2780, 0, 0, 0 }, 9044 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_SCAMP, 9045 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_571E, 0, 0, 0 }, 9046 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_SCAMP, 9047 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_571F, 0, 0, 9048 IPR_USE_LONG_TRANSOP_TIMEOUT }, 9049 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_SCAMP, 9050 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572F, 0, 0, 9051 IPR_USE_LONG_TRANSOP_TIMEOUT }, 9052 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROC_FPGA_E2, 9053 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57B5, 0, 0, 0 }, 9054 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROC_FPGA_E2, 9055 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_574D, 0, 0, 0 }, 9056 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROC_FPGA_E2, 9057 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57B2, 0, 0, 0 }, 9058 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROC_FPGA_E2, 9059 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57C4, 0, 0, 0 }, 9060 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROC_ASIC_E2, 9061 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57B4, 0, 0, 0 }, 9062 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROC_ASIC_E2, 9063 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57B1, 0, 0, 0 }, 9064 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROC_ASIC_E2, 9065 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57C6, 0, 0, 0 }, 9066 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROC_ASIC_E2, 9067 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_575D, 0, 0, 0 }, 9068 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROC_ASIC_E2, 9069 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57CE, 0, 0, 0 }, 9070 { } 9071}; 9072MODULE_DEVICE_TABLE(pci, ipr_pci_table); 9073 9074static struct pci_error_handlers ipr_err_handler = { 9075 .error_detected = ipr_pci_error_detected, 9076 .slot_reset = ipr_pci_slot_reset, 9077}; 9078 9079static struct pci_driver ipr_driver = { 9080 .name = IPR_NAME, 9081 .id_table = ipr_pci_table, 9082 .probe = ipr_probe, 9083 .remove = __devexit_p(ipr_remove), 9084 .shutdown = ipr_shutdown, 9085 .err_handler = &ipr_err_handler, 9086}; 9087 9088/** 9089 * ipr_halt_done - Shutdown prepare completion 9090 * 9091 * Return value: 9092 * none 9093 **/ 9094static void ipr_halt_done(struct ipr_cmnd *ipr_cmd) 9095{ 9096 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 9097 9098 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q); 9099} 9100 9101/** 9102 * ipr_halt - Issue shutdown prepare to all adapters 9103 * 9104 * Return value: 9105 * NOTIFY_OK on success / NOTIFY_DONE on failure 9106 **/ 9107static int ipr_halt(struct notifier_block *nb, ulong event, void *buf) 9108{ 9109 struct ipr_cmnd *ipr_cmd; 9110 struct ipr_ioa_cfg *ioa_cfg; 9111 unsigned long flags = 0; 9112 9113 if (event != SYS_RESTART && event != SYS_HALT && event != SYS_POWER_OFF) 9114 return NOTIFY_DONE; 9115 9116 spin_lock(&ipr_driver_lock); 9117 9118 list_for_each_entry(ioa_cfg, &ipr_ioa_head, queue) { 9119 spin_lock_irqsave(ioa_cfg->host->host_lock, flags); 9120 if (!ioa_cfg->allow_cmds) { 9121 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags); 9122 continue; 9123 } 9124 9125 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg); 9126 ipr_cmd->ioarcb.res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE); 9127 ipr_cmd->ioarcb.cmd_pkt.request_type = IPR_RQTYPE_IOACMD; 9128 ipr_cmd->ioarcb.cmd_pkt.cdb[0] = IPR_IOA_SHUTDOWN; 9129 ipr_cmd->ioarcb.cmd_pkt.cdb[1] = IPR_SHUTDOWN_PREPARE_FOR_NORMAL; 9130 9131 ipr_do_req(ipr_cmd, ipr_halt_done, ipr_timeout, IPR_DEVICE_RESET_TIMEOUT); 9132 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags); 9133 } 9134 spin_unlock(&ipr_driver_lock); 9135 9136 return NOTIFY_OK; 9137} 9138 9139static struct notifier_block ipr_notifier = { 9140 ipr_halt, NULL, 0 9141}; 9142 9143/** 9144 * ipr_init - Module entry point 9145 * 9146 * Return value: 9147 * 0 on success / negative value on failure 9148 **/ 9149static int __init ipr_init(void) 9150{ 9151 ipr_info("IBM Power RAID SCSI Device Driver version: %s %s\n", 9152 IPR_DRIVER_VERSION, IPR_DRIVER_DATE); 9153 9154 register_reboot_notifier(&ipr_notifier); 9155 return pci_register_driver(&ipr_driver); 9156} 9157 9158/** 9159 * ipr_exit - Module unload 9160 * 9161 * Module unload entry point. 9162 * 9163 * Return value: 9164 * none 9165 **/ 9166static void __exit ipr_exit(void) 9167{ 9168 unregister_reboot_notifier(&ipr_notifier); 9169 pci_unregister_driver(&ipr_driver); 9170} 9171 9172module_init(ipr_init); 9173module_exit(ipr_exit); 9174